Which of the Following Is True of Pregnancy Tests

Multiple Choice

Which of the following is true of pregnancy tests?

A) The most common pregnancy test is based on detecting human chorionic gonadotropin (hCG) in a woman's urine.
B) The later it is done,the more difficult it is for laboratory tests to detect pregnancy.
C) All home pregnancy tests accurately detect a pregnancy on the first day of the missed period.
D) All over-the-counter pregnancy tests can detect ectopic pregnancies.