Which of the Following Is an Example of the Effect

Which of the following is an example of the effect of certain nutrients or foods on gene expression and disease development?

A) A phytochemical found in broccoli and broccoli sprouts has been shown to reverse uncontrolled cancer cell division in laboratory studies.
B) Supplementation of folate and vitamin B₁₂ during pregnancy has been shown to turn off the "yellow and fat" gene in pups born to laboratory mice.
C) Genomics testing laboratories have shown the benefits of supplements that are matched to an individual's personal genetic prescription.
D) a and b
E) a and c