The initial laboratory results for a primigravida indicate a hemoglobin of 12 grams/dL, hematocrit of 36%, and a blood group and type of A, Rh-negative. What would be the priority nursing action to promote a healthy pregnancy for this client and her fetus? A. Suggest an iron supplement in addition to prenatal vitamins B. Plan to determine the blood type of the infant after delivery C. Provide information on weight gain during pregnancy D. Encourage the client to eat more dark-green leafy vegetables