Choose the Answer Which Best Rewords the Italicized Portion

Choose the answer which best rewords the italicized portion. If you think the original wording is best, choose option A.
After the conclusion of Great Britain's partition of India and Pakistan, the state of Jammu and Kashmir did not decide what nation to join.

A) After the conclusion of Great Britain's partition
B) The conclusion of Great Britain's partition
C) After Great Britain's partition
D) Because of Great Britain's partition