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: the whale was grateful for the fisherman for removing a harpoon from its body. The whale
Completion A: stabs the fisherman with the harpoon and screams "Boo-Yah"
Completion B: waves at the harpoon for removing the fisherman
Completion C: swims away with the harpoon
Completion D: swims around the boat, occasionally surfacing
Completion D