To Reduce the Risk of a Variety of Birth Defects

To reduce the risk of a variety of birth defects such as spinal cord abnormalities, the U.S. government recommends that a woman should consume a minimum of 400 mcg of folic acid per day if she is:

A) trying to conceive a child.
B) in her first trimester of pregnancy.
C) in her second or third trimester of pregnancy.
D) of childbearing age, regardless of whether she is pregnant or trying to conceive.