Select the option that expresses the given sentence in passive voice.
An unexpected call disturbed Maria terribly which compelled her to stop the performance.

A

Maria was disturbed terribly by an unexpected call which compelled her to stop the performance.

B

Maria could be disturbed terribly by an unexpected call which compelled her to stop the performance.

C

Maria disturbed terribly by an unexpected call which compelled her to stop the performance

D

Maria had been disturbed terribly by an unexpected call which compelled her to stop the performance.