Detailed Instructions: 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: My brother is three years younger than me. I 
Completion A: feel jealous that I was always more successful than him. 
Completion B: will be forty when he is thirty. 
Completion C: wonder if his name is Henry. 
Completion D: remember being an only child before he was born.
A:
Completion D