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 girl is reluctantly doing her homework in the library. The girl 
Completion A: does not understand the content. 
Completion B: is in a good mood. 
Completion C: loves doing homework. 
Completion D: is an exceptional student.
Completion A