Pregnancy Safety Category C Is Best Described By

Pregnancy safety category C is best described by:

A) Adequate and well-controlled studies have indicated no risk to a fetus in the first trimester of pregnancy and have produced no evidence of risk in later trimesters.
B) Animal studies have indicated no risk to a fetus;however,no well-controlled studies in pregnant women have been conducted.
C) Animal studies have indicated adverse effects on a fetus;however,no well-controlled studies in humans have been conducted.
D) Positive human fetal risk has been reported in investigational or marketing experience or human studies.