This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psoriasis, Subject name: Dental
[{'content': 'All of the following statements about Guttate psoriasis are FALSE except: \nSelect and explain. \nA. Most common in elderly, B. It is the most common variety of psoriasis and is insidious onset with chronic clinical course, C. Association with alpha-hemolytic streptococci known, D. Seen paicularly on trunk', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Guttate psoriasis precipitated by preceding upper respiratory infection caused by group A beta-hemolytic streptococcus. Small lesions, appearing generally over the body, paicularly in children and young adults. Lesions are from 2-3 mm to 1 cm in diameter, round or slightly oval. Lesions are scattered more or less evenly over the body, paicularly on the trunk and proximal pa of the limb The differential diagnosis should include Pityriasis rosea and Secondary syphilis.', 'role': 'assistant'}]