A Client Reports Experiencing Severe Abdominal and Pelvic Pain Around

A client reports experiencing severe abdominal and pelvic pain around the time of menstruation.This pain has become progressively worse over the last 5 years.She also experiences pain during intercourse and has tried unsuccessfully to become pregnant for the past 18 months.To which condition are these symptoms most likely related?

A) Endometriosis
B) Premenstrual Syndrome (PMS)
C) Primary dysmenorrhea
D) Secondary dysmenorrhea