<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 42-year-old man presents to the clinic for a several-month history of fatigue, and it is starting to affect his work. He often needs to sneak away in the middle of the day to take naps or else he cannot focus and is at risk of falling asleep at his desk. He has been feeling like this for approximately 1 year. Otherwise, he feels healthy and takes no medications. On further questioning, he also had constipation and thinks he has gained some weight. He denies shortness of breath, chest pain, lightheadedness, or blood in his stool. The vital signs include: pulse 56min, blood pressure 12478 mm Hg, and oxygen saturation 99 on room air. The physical exam is notable only for slightly dry skin. The complete blood count CBC is within normal limits, and the thyroid-stimulating hormone TSH is 8.0 μUmL. Which of the following is the next best treatment for this patient?? A: Erythropoietin, B: Inhaled fluticasone plus salmeterol, C: Levothyroxine, D: Packed red blood cell RBC transfusion, E: Prednisone,  <response>: This is a patient with symptoms of fatigue, constipation, weight gain, and dry skin, along with laboratory evidence of elevated TSH. The elevated TSH indicates hypothyroidism, which is the likely cause of his symptoms. C: Levothyroxine 