Becky's 2-Year Old Son Can't Walk Because He Was Born

Becky's 2-year old son can't walk because he was born with spina bifida. To reduce the chances that her next baby is born with a neural tube defect, Becky should

A) take pantothenic acid, B-6, and B-12 supplements before getting pregnant.
B) eat at least 3 ounces of fatty fish three times a week, take vitamin A and D supplements and drink more fat-free milk during the first three months of pregnancy.
C) consume green leafy vegetables, drink orange juice, and take a folic acid supplement before getting pregnant.
D) take iron, zinc, and magnesium supplements during the first month of pregnancy, then eat more whole-grain breads and cereals for the remaining months of pregnancy.