Q: 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: Jack went up the hill. Jack 
Completion A: planted a flag 
Completion B: climbed a giraffe 
Completion C: yooted 
Completion D: hurt the rocks
A:
Completion A