This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Vasanti, 28-year-old, presents with complaints of tightness of fingers. There is also history of dysphagia. Which of the following is the probable diagnosis: \nSelect and explain. \nA. Dermatomyositis, B. Scleroderma, C. Rheumatoid ahritis, D. Polyaeritis nodosa', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer is B (Scleroderma) : The presence of tightness in fingers and dysphagia in a young female suggest a diagnosis of Scleroderma. Diagnosis of scleroderma in this patient is suggested by: Evidence of fibrosis of skin : Tightness of fingers. Evidence of visceral involvement : Esophageal motility or dysphagia Epidemiological characteristic : Peak incidence of scleroderma is seen in womene during the 3rd to 5th decade', 'role': 'assistant'}]