The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 24-year-old woman comes to the physician because of persistent fatigue for the past 4 months. She has no history of major medical illness. Her temperature is 36°C (96.8°F), pulse is 121/min, and blood pressure is 120/78 mm Hg. Physical examination shows pale conjunctivae. A peripheral blood smear is shown. Which of the following is the most likely cause of this patient's symptoms?   (A) Hereditary spherocytosis   (B) Vitamin B12 deficiency   (C) Iron deficiency   (D) β-thalassemia minor
['(C) Iron deficiency <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Hereditary spherocytosis \n (B) Vitamin B12 deficiency \n (C) Iron deficiency \n (D) β-thalassemia minor <> possible answers', "  A 24-year-old woman comes to the physician because of persistent fatigue for the past 4 months. She has no history of major medical illness. Her temperature is 36°C (96.8°F), pulse is 121/min, and blood pressure is 120/78 mm Hg. Physical examination shows pale conjunctivae. A peripheral blood smear is shown. Which of the following is the most likely cause of this patient's symptoms? <> context@"]