As part of her prenatal care, a pregnant woman and her partner are being taught by a community ...

As part of her prenatal care, a pregnant woman and her partner are being taught by a community health nurse. Which of the following points about the teratogenic effects of different substances should the nurse include in his teaching?
 
  A)
  Your developing baby is most vulnerable during the first 2 months of your pregnancy.
  B)
  You need to be very careful with vitamin D and its derivatives.
  C)
  Keep in mind that a high percentage of genetic abnormalities are attributable to drug origins.
  D)
  Your best option is to avoid using any drugs during your pregnancy.