An Adolescent Female Reports Crampy Pelvic Pain Radiating to the Back

An adolescent female reports crampy pelvic pain radiating to the back, sacrum, and inner thighs during the first 2 days of each menstrual period, associated with nausea and loose tools. She asks about what causes these symptoms. What will the provider tell her?

A) Excess prostaglandins, vasopressin will cause these symptoms.
B) Mechanical cervical obstruction and severe uterine flexion are likely causes.
C) Nulliparity and her young age are correlated with these symptoms.
D) The most likely cause at her age is anovulatory menstrual cycles.