A 16-Year-Old Boy Is Brought to the Physician by His

A 16-year-old boy is brought to the physician by his mother for a well-child examination. He recently stopped attending his swim classes. The patient is at the 97th percentile for height and the 50th percentile for weight. Examination shows decreased facial hair, bilateral breast enlargement, and long extremities. Genital examination shows scant pubic hair, small testes, and a normal-sized penis. Laboratory evaluation would most likely show which of the following findings?

A) Decreased estradiol
B) Increased androstenedione
C) Increased B-hCG
D) Increased creatinine
E) Increased FSH
F) Increased prolactin
G) Prolonged prothrombin time