The nurse is teaching a client, gravida 1 para 0, at 8 weeks gestation about expected weight gain in pregnancy. The client's prepregnancy BMI is 21 kg/m2. Which statement made by the client indicates an understanding about weight gain?
A. I should gain 10-15 lb (4.5-6.8 kg) during the first trimester.
B. I should gain a total of about 30 lb (13.6 kg) during my pregnancy.
C. I should gain no more than 0.5 lb (0.2 kg) per week during the third trimester.
D. If I gain <20 lb (9.1 kg) during pregnancy, it will be easier to lose weight postpartum.