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 student studied for hours before the test. Once she received the exam 
Completion A: she felt confident, and completed it with ease. 
Completion B: read a book. 
Completion C: immediately left to see her friend. 
Completion D: made some soup.
Completion A

Prompt: A boy is playing computer game. He 
Completion A: is tired 
Completion B: is a boy 
Completion C: doesn't want to stop 
Completion D: loves programming
Completion C

Prompt: Books like this are a dime a dozen. These books 
Completion A: have very rich authors 
Completion B: sell really well. 
Completion C: are very common. 
Completion D: are worth a lot of money.

Completion C