Answer to Question 1
A
Answer to Question 2
C
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Pelvic inflammatory disease, an infection of the ovaries (oophoritis), oviducts (salpingitis), uterus, or pelvic cavity, enters the body through the vagina, peritoneum, lymphatic system, or bloodstream. Two STIs are the most common cause of PIDChlamydia trachomatis and Neisseria gonorrhea. Many other STIs and the bacterial strain of streptococcus may also cause PID.