Which of the following is true about AP classes?
A. Students can earn college credit by doing well on an AP exam.
B. They provide guaranteed free credit.
C. They are available only in some states.
D. They require additional class time to complete.

I'm pretty sure it's A

Explanation:

I did a few quick Google searches on ap classes because I myself do not take them a I read that most colleges do take ap classes as credit. it's no guaranteed however as it says many, not all. and for C I looked it up and I'm assuming they can be taken anywhere. take what I say with a grain of salt though because like I said I just googled it, hope it helps though.

answer:

c.

explanation: