OG上谋篇，这道题实在没看明白答案

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Newobservations about the age of some globular clusters in our Milky Way galaxy (Milky Way galaxy: n.[天]银河系) have cast doubt on a long-held theory about howthe galaxy was formed（TS）. The Milky Way contains about 125globular clusters (compact groups of anywhere from several tens of thousands (tens of thousands: 好几万)toperhaps a million stars) distributed in a roughly spherical halo around the galacticnucleus (galactic nucleus:[天]星系核). Thestars in these clusters are believed to havebeen born during the formation of the galaxy, and so maybe considered relics of the original galactic nebula (galactic nebula: n.[天]银河星云), holding vital clues to the way the formation took place.
Theconventional theory of the formation of the galaxycontends that roughly 12 to 13 billion years ago the Milky Way formed over arelatively short time (about 200 million years) when a spherical cloud of gascollapsed under the pressure of its own gravity into a disc surrounded by ahalo. Such a rapid formation of the galaxy would meanthat all stars in the halo should be very nearly the same age.
However, the astronomer Michael Bolte has found considerablevariation in the ages of globular clusters. One of the clusters studiedby Bolte is 2 billions years older than most other clusters in the galaxy,while another is 2 billion years younger. A colleague of Bolte contends thatthe cluster called Palomar 12 is 5 billion years younger than most otherglobular clusters.
Toexplain the age differences among the globularclusters, astronomers are taking a second look at “renegade” theories. One suchnewly fashionable theory, first put forward by RichardLarson in the early 1970’s, argues that the halo of the Milky Way formedover a period of a billion or more years as hundreds of small gas cloudsdrifted about, collided, lost orbital energy, and finally collapsed into acentrally condensed elliptical system. Larson’sconception of a “lumpy and turbulent”protogalaxy is complemented bycomputer modeling done in the 1970’s by mathematician Alan Toomre, whichsuggests that closely interacting spiral galaxies could lose enough orbitalenergy to merge into a single galaxy.
142.  Whichof the following most accurately states a finding of Bolte’s research, asdescribed in the passage?
(A) Theglobular clusters in the Milky Way galaxy are 2 billion years older thanpredicted by the conventional theory.

(B) The ages ofat least some globular clusters in the Milky Way galaxy differ by at least 4billion years.
(C) One of theglobular clusters in the Milky Way galaxy is 5 billion years younger than mostothers.
(D) Theglobular clusters in the Milky Way galaxy are significantly older than theindividual stars in the halo.（B）
(E) Mostglobular clusters in the Milky Way galaxy are between 11 and 15 billion yearsold.
根据原文看为什么C不对？不是原文么不是原文么么么么么