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 is studying for a math test while John is cooking. She
Completion A: cuts the chicken and starts a marinade.
Completion B: goes to the grocery to buy some vegetables.
Completion C: opens her English textbook.
Completion D: evaluates a complex integral.
Completion D