Given the task definition and input, reply with output. Given a prompt and four completions, select the completion that is the most plausible in continuing or answering the prompt. This task is designed to test common sense and has various categories ranging between idioms, negated statements, polysemy, subject referencing, and quantitative reasoning. Generate either Completion A, Completion B, Completion C, or Completion D.

Prompt: A student is riding the bus to school. She
Completion A: wakes up from her dream and realizes it's a weekend.
Completion B: answers the teacher's question and passes the test.
Completion C: waves to her friend out the window.
Completion D: commandeers the bus and goes to the beach.
Completion C