Which of the following employs an ad hominem fallacy?
A. Springfield built a new library, and the students' test scores
increased greatly
B. The people who do not support the new library building must be
uneducated and stupid.
C. Everyone who has seen the plans for the new library believes that
it will be better than the old library.
D. The old library building is falling apart because it is in such
disrepair.