Regarding a Comparison of Sexuality in the United States and Other

Regarding a comparison of sexuality in the United States and other countries, which of the following statements is TRUE?

A) People from the United States are more likely to have had only one recent sexual partner, while people from developing countries have had two more recent partners.
B) A survey of 59 nations found that a "sexual revolution" like the one that occurred in the United States, has also occurred in most developing countries.
C) In the countries in Africa where AIDS is epidemic, Africans report having fewer sexual partners than their counterparts in developing countries.
D) On average, teenagers around the world have their first sexual experience at an earlier age than American teenagers.