Given the task definition and input, reply with output. 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: It is a good idea to brush teeth before sleeping because
Completion A: Jesus and Satan have made a pact according to which humans should brush teeth before sleeping.
Completion B: you may get cavities if you do not.
Completion C: teeth looks better when dusted off.
Completion D: angels will bless you if you keep your teeth clean.
Completion B