A client has obtained Plan B (levonorgestrel 0.75 mg, 2 tablets) as emergency contraception. After unprotected intercourse, the client calls the clinic to ask questions about taking the contraceptives, The nurse realizes the client needs further explanation when she makes which of the following responses?

a. "I can wait 3 to 4 days after intercourse to start taking these to prevent pregnancy."
b. "My boyfriend can buy Plan B from the pharmacy if he is over 18-years-old."
c. "The birth control works by preventing ovulation or fertilization of the egg."
d. "I may feel nauseated or have breast tenderness or a headache after using the contraceptive."