<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 52-year-old African-American woman presents to the office complaining of difficulty swallowing for 1 week, and described it as food getting stuck in her throat. Her discomfort is mainly for solid foods, and she does not have any problem with liquids. She further adds that she has frequent heartburn and lost 5 pounds in the last month because of this discomfort. She sometimes takes antacids to relieve her heartburn. Her past medical history is insignificant. She is an occasional drinker and smokes a half pack of cigarettes a day. On examination, her skin is shiny and taut especially around her lips and fingertips. A barium swallow study is ordered. Which of the following is the most likely diagnosis?? A: Zenkers diverticulum, B: Achalasia, C: Scleroderma, D: Polyomyositis, E: Diffuse esophageal spasm,  <response>: Based on the information provided in the question stem, the key findings are:- 52-year-old African-American woman - Difficulty swallowing solids for 1 week, described as food getting stuck in her throat- Frequent heartburn, lost 5 pounds in the past month- Occasional drinker, smokes half a pack per day- Shiny, taut skin around lips and fingertips- Barium swallow study orderedThe difficulty swallowing solids, weight loss, heartburn, and shinytight skin around the lips and fingertips point towards a diagnosis of scleroderma. Scleroderma can cause fibrosis and dysfunction of the esophagus leading to dysphagia, GERD, and weight loss. The skin changes described are also classic for scleroderma. The other options can be ruled out: Zenkers diverticulum would not cause skin changes. Achalasia presents with dysphagia to both solids and liquids. Polymyositis may cause dysphagia but not the skin changes described. Diffuse esophageal spasm would be unlikely with no issue swallowing liquids.C: Scleroderma 