Which sentence uses parentheses correctly?

Responses
A No one (except Margaret seriously wants to go on this trip to Six Flags.No one (except Margaret seriously wants to go on this trip to Six Flags.
B Geoffrey Chaucer the father of English poetry) is buried in Westminster Abbey.Geoffrey Chaucer the father of English poetry) is buried in Westminster Abbey.
C (Although not opposed to the bill) the senator did abstain from the actual vote.(Although not opposed to the bill) the senator did abstain from the actual vote.
D After several attempts, I gave up trying to wash our dog (Lucky simply hates a bath).

C (Although not opposed to the bill) the senator did abstain from the actual vote.

This sentence uses parentheses correctly to set off an aside or additional information that is not essential to the main point of the sentence. The other sentences have mismatched or misplaced parentheses.