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: Skin
[{'content': 'Lesions of pityriasis rosea are distributed mostly on the: \nSelect and explain. \nA. Face, B. Trunk, C. Scalp, D. Palms and soleus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans:B.)Trunk', 'role': 'assistant'}]