A Young Woman Calls the Clinic and Asks to Speak

A young woman calls the clinic and asks to speak to a nurse.She states that she had unprotected sexual intercourse, and she is worried about becoming pregnancy.Which question by the nurse will elicit information helpful to this client?

A) "Have you ever used emergency contraception before?"
B) "Are you aware how dangerous it is to have unprotected sexual intercourse?"
C) "When was your last period?"
D) "How old are you?"