A 32-year old woman comes to the physician because she has not been able to conceive for 5 years. Previous fertility examinations of her husband showed no abnormalities. Menses occur at regular 28-day intervals. Her blood pressure is 110/70 mm Hg. Physical and pelvic examinations show no abnormalities. Hysterosalpingography shows normal findings. Her serum hormone concentrations are within the reference range. Which of the following is the most appropriate pharmacotherapy for this patient’s infertility?
A. Bromocriptine B. Clomiphene C. Diethylstilbestrol D. Ethinyl estradiol E. Medroxyprogesterone