Your patient is a transgender man complaining of severe lower abdominal pain. He states that he is in the process of transitioning from female to male, and that he takes hormone supplements. When evaluating this patient, which of the following questions is most appropriate?

A) "Are you planning to have gender reassignment surgery?"
B) "When was your last menstrual cycle?"
C) "How often do you use illegal drugs?"
D) "Are you usually sexually active with men, or with women?"

B