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: Sally was concerned about John's state of mind after he 
Completion A: cut off all of his fingers. 
Completion B: obeyed traffic signals while driving. 
Completion C: completed his degree in psychology. 
Completion D: purchased flowers at the store.

Completion A