A 25-Year-Old Patient Is Prescribed a Drug for Acne for 6

A 25-year-old patient is prescribed a drug for acne for 6 months that is teratogenic.Which precaution is most important to teach this patient?

A) "Drugs with this classification reduce the effectiveness of oral contraceptives and you will need to switch to another form of birth control to prevent pregnancy."
B) "One side effect of drugs with this classification is nausea,which will make morning sickness more severe if you become pregnant while taking this drug."
C) "Use two reliable forms of birth control during the next 6 months because drugs with this classification cause severe birth defects."
D) "Your risk for sexually transmitted diseases is increased while taking this drug and for 3 months after therapy is completed."