Which statement about the human immunodeficiency virus (HIV) is true?

A) In developing countries, about 30 percent of all new HIV infections affect women.
B) In South Africa, 30 percent of all pregnant women are HIV-positive.
C) About 30 percent of new HIV infections occur in developing countries.
D) Untreated HIV-infected expectant mothers pass the virus to the developing organism 30 percent of the time.

Answer: B