Which is the most likely site of the mass?

a sexually active 18year old woman comes to the physician’s office because of fever, lower abdominal pain, and a purulent vaginal discharge for the last 3 weeks. A tender mass is palpated in the right lower quadrant on bimanual examination. Which is the most likely site of the mass?

a) ovary
b) fallopian tube
c) uterine fundus
d)uterine body
e)vagina
f) bladder
g) rectum