What Is One of the Reasons the Number of Ectopic

What is one of the reasons the number of ectopic pregnancies has been increasing in the U.S.?

A) More females are using assisted reproductive technologies to become pregnant.
B) The level of quality nutrition available in the U.S. has declined.
C) There has been an increase in pelvic inflammatory disease caused by chlamydia infections.
D) The birth rate among teens and unmarried women has been increasing and these groups are less likely to receive prenatal care.