What is the evidence that the effects of experience on taste begin in the prenatal environment? ...

What is the evidence that the effects of experience on taste begin in the prenatal environment?
 
  a. Fetuses with higher than normal levels of sodium in their amniotic fluid preferred food with at least some salt as infants.
  b. Mothers with high glucose levels during pregnancy reported having a more difficult time getting their infants to consume vegetable purees, but not fruit purees.
  c. Infants whose mothers consumed carrot juice during pregnancy showed stronger preferences for carrot flavor.
  d. Mothers who drank coffee during pregnancy reported that their infants were more accepting of bitter foods.