[讨论]新prep 语法181

181.      (32807-!-item-!-188;#058&007145)         (GWD-24-38)

In
January 1994 an oil barge ran aground off the coast of San
Juan, Puerto Rico, leaking its
cargo of 750,000 gallons into the ocean, while causing the pollution of the
city's beaches. 

A.
leaking its cargo of 750,000 gallons into the ocean, while causing the
pollution of

B.
with its cargo of 750,000 gallons leaking into the ocean, and it polluted

C.
and its cargo of 750,000 gallons leaked into the ocean, polluting

D.
while it leaked its cargo of 750,000 gallons into the ocean and caused the
pollution of

E.
so that its cargo of 750,000 gallons leaked into the ocean, and they were
polluting

为什么不选A呢？ 谢谢！

因为polluting是leaking...所导致的结果，A把他们并列起来了不好。