Sentence Correction

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

OA: C

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

Here we need (,ing) polluting because this modifies the preceding clause or shows the effect of oil leakage.

Thanks for the solution.
I was also looking to understand why the other options are wrong.