1. A 32-year-old wom an in her second trim ester of pregnancy presented to the clinic for a check-up. The patient had a 5-year history of excessive alcohol intake and had been using cocaine frequently...

1. A 32-year-old wom an in her second trim ester of pregnancy presented to the clinic for a check-up. The patient had a 5-year history of excessive alcohol intake and had been using cocaine frequently for the past 3 years. She appeared m alnourished and had lost 12 pounds during the rst trim ester, secondary to anorexia, nausea, and vom iting. Pertinent laboratory values were red blood cell count (RBC) 2.7 × 106/mm3 (norm al, fem ale 3.5-5.5 × 106/mm3), m ean corpuscular volum e 112 fL(norm al 80-100 fL), serum vitam in B12 350 pg/m L (norm al > 280 pg/m L), serum ferritin 200 ng/m L (norm al 30-300 ng/m L). Blood stain showed m acro-ovalocytic RBCs and hypersegm entation of neutrophils. Which of the follow - ing drugs would be m ost appropriate for this patient? A. Cyanocobalam in B. Folic acid C. Ferrous sulfate D. Iron dextran E. Erythropoietin