<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 62-year-old man with gastroesophageal reflux disease and osteoarthritis is brought to the emergency department because of a 1-hour history of severe, stabbing epigastric pain. For the last 6 months, he has had progressively worsening right knee pain, for which he takes ibuprofen several times a day. He has smoked half a pack of cigarettes daily for 25 years. The lungs are clear to auscultation. An ECG shows sinus tachycardia without ST-segment elevations or depressions. This patient is most likely to have referred pain in which of the following locations?? A: Right scapula, B: Left shoulder, C: Umbilicus, D: Left jaw, E: Right groin,  <response>: This is a clinical vignette about a 62-year-old man with gastroesophageal reflux disease and osteoarthritis presenting with acute epigastric pain. Key points from the vignette:- 62-year-old male - Known gastroesophageal reflux disease- Known osteoarthritis, takes ibuprofen regularly for knee pain- Presenting with acute, severe, stabbing epigastric pain- 25 pack-year smoking history- Lungs clear on exam- ECG shows sinus tachycardia, no ST changesThe question asks about the most likely location for referred pain in this patient. Referred pain is pain perceived at a location different from the site of the pains origin. Based on the clinical vignette, the most likely source of this patients epigastric pain is an abdominal visceral structure given his history of gastroesophageal reflux disease. Visceral pain from intra-abdominal organs is often referred to the skin or musculoskeletal structures.Of the choices provided, the left shoulder would be the most likely site for referred pain from the upper abdomen. Pain from the gallbladder, pancreas, and upper stomach can radiate to the left shoulder due to shared innervation by the phrenic nerve.B: Left shoulder 