Which Should the Nurse Be Aware of with Regard to Medications,herbs,immunizations,and

Which should the nurse be aware of with regard to medications,herbs,immunizations,and other substances during pregnancy?

A) Both prescription and over-the-counter (OTC) drugs that otherwise are harmless can become hazardous by metabolic deficiencies of the fetus.
B) The greatest danger of drug-caused developmental deficits in the fetus is seen in the final trimester.
C) Killed-virus vaccines (e.g. ,tetanus) should not be given during pregnancy,but live-virus vaccines (e.g. ,measles) are permissible.
D) No convincing evidence exists that second-hand smoke is potentially dangerous to the fetus.