Which Patient Is at Greatest Risk for Developing Chlamydia Trachomatis

Which patient is at greatest risk for developing chlamydia trachomatis infection?

A) 16-year-old, sexually active female, using no contraceptive
B) 22-year-old mother of two, who has dyspareunia
C) 35-year-old woman on oral contraceptives
D) 48-year-old woman with hot flashes and night sweats