大全SECTION A-09

It was an increase in reported cases of malaria along the Gulf Coast that in 1921 led the health authorities’ granting a permit for experimentation with human subjects to the group that later would be called by the name of Unimedco.

(A) authorities’ granting a permit for experimentation with human subjects to the group that later would be called by the name of

(B) authorities’ granting a permit for experimentation with human subjects to the group that later to be called by the name of

(C) authorities’ granting a permit for experimentation using human subjects to the group that later would be called by the name of

(D) authorities to grant a permit for human experimentation to the group later called（D）

(E) authorities to grant a permit for human experimentation to the group that later would be called by the name of.

此题为什么选D呢？？