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.
Q: Prompt: I feel sickly. I think 
Completion A: I will have a great time. 
Completion B: I will see my brother at the casino. 
Completion C: I will fly out the window. 
Completion D: I will not go to school today.
A: 
Completion D