Which Statement Describes a Relationship Between Body Weight and Pregnancy

Which statement describes a relationship between body weight and pregnancy? ​

A) Overweight women bear the greatest number of low-birthweight infants.
B) Weight gain during pregnancy is the sole determinant of infant birthweight.
C) The increased incidence of neural tube defects of infants born to obese women is due primarily to folate insufficiency.
D) The rates of preterm births and infant deaths are higher for underweight women.