In a recent commercial for headache medicine, it claims “four out of five doctors use this medicine whenever they have a headache.” What do you need to remember as a consumer to BEST evaluate this advertisement?

A.
If doctors say something is true, it is probably true.

B.
There are no sources listed that can verify these statistics.

C.
Anything claimed on television has to be backed up by thorough research.

D.
Without a celebrity endorsement, no advertisement can be 100 percent believable.