The Nurse Working in a Health Clinic Receives Calls from All

The nurse working in a health clinic receives calls from all these patients. Which patient should be seen by the health care provider first?

A) A 44-year-old man who has perineal pain and a temperature of 100.4° F
B) A 66-year-old man who has a painful erection that has lasted over 7 hours
C) A 62-year-old man who has light pink urine after having a transurethral resection of the prostate (TURP) 3 days ago
D) A 23-year-old man who states he had difficulty maintaining an erection last night