In Each of the Following Sets, Select the Sentence That

Multiple Choice

In each of the following sets, select the sentence that uses the correct coordinating or subordinating conjunction and that is punctuated correctly. Which sentence uses the correct coordinating or subordinating conjunction and is punctuated correctly?

A) The upstairs neighbors played loud music, until the early morning or Paul slept right through the noise.
B) The upstairs neighbors played loud music until the early morning, for Paul slept right through the noise.
C) The upstairs neighbors played loud music until the early morning, but Paul slept right through the noise.