At the Health Clinic,a 22-Year-Old Man Tells the Nurse That

At the health clinic,a 22-year-old man tells the nurse that he has recently become unable to achieve an erection.The nurse assesses the patient with the knowledge that the increased incidence of erectile dysfunction in young men is related to which of the following factors?

A) Stress
B) Postpriapism
C) Recreational drug use
D) Social sexual expectation