The nurse is preparing to discuss drug use during pregnancy with a group of nursing students. The main topic is the FDA drug classifications. Which of the following drugs should the nurse inform the...

The nurse is preparing to discuss drug use during pregnancy with a group of nursing students. The main topic is the FDA drug classifications. Which of the following drugs should the nurse inform the students are the most detrimental to the fetus?

1. Category A

2. Category B

3. Category C

4. Category X