Select the Revised Sentence with Parallel Structure

Multiple Choice

Select the revised sentence with parallel structure.
-The plumber unclogged the drain. The pipes had to be flushed, and she fixed the garbage disposal.

A) The plumber unclogged the drain, the pipes were flushed, and the garbage disposal was fixed.
B) The plumber unclogged the drain, flushed the pipes, and fixed the garbage disposal.
C) The plumber unclogged the drain, flushes the pipes, and fixed the garbage disposal.
D) The plumber unclogged the drain, flushed the pipes, and she fixed the garbage disposal.