<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 31-year-old female presents to the clinic with excessive anxiety and palpitations for a month. She also mentions losing of 2.72 kg 6 lb of her weight over the last month. Her past medical history is insignificant. She does not smoke nor does she drink alcohol. Her temperature is 37C 98.6F, pulse is 81min, respiratory rate is 23min, and blood pressure is 12988 mm Hg. On examination, mild exophthalmos is noted. Heart and lung examination is normal including cardiac auscultation. What is the most likely cause of her symptoms?? A: Inadequate iodine in her diet, B: Thyroid stimulating antibodies, C: Medullary carcinoma of the thyroid, D: Lithium use, E: Use of propylthiouracil,  <response>: Based on the information provided in the question stem, the key findings are:- 31 year old female with anxiety, palpitations, weight loss, and mild exophthalmos bulging eyes over the past month- Vital signs show tachycardia elevated pulse and mild hypertension - No significant past medical history or medication use- Normal heart and lung examThe symptoms of anxiety, palpitations, weight loss, bulging eyes exophthalmos, and tachycardia point towards hyperthyroidism as the most likely diagnosis. The answer choices provide different potential causes of hyperthyroidism. Inadequate iodine is unlikely in a previously healthy young female. Medullary carcinoma would not present with these typical hyperthyroid symptoms. Lithium use is not mentioned. Propylthiouracil is used to treat hyperthyroidism, not cause it. The presence of exophthalmos makes Graves disease the most likely cause, due to stimulating autoantibodies against the thyroid stimulating hormone TSH receptor.B: Thyroid stimulating antibodies 