The Negative Effects on the Fetus of Drugs Used to Alleviate

The negative effects on the fetus of drugs used to alleviate pain during childbirth are:

A) thought to be minimal and of no cause for concern.
B) greatest for analgesics to reduce pain and least for sedatives to reduce anxiety.
C) of concern to some women, leading them to explore alternative methods of controlling pain during labor.
D) primarily from the influence on the mother's oxygen intake.