Which of the Following Is a Characteristic of Neural Tube

Which of the following is a characteristic of neural tube defects?

A) They occur in about 3,000 pregnancies in the United States each year
B) They include common disorders such as liver and kidney disease
C) They can be prevented by supplementation of the pregnant woman's diet with vitamin B₁₂
D) They can be prevented by supplementation of the pregnant woman's diet with vitamins A and E