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': 'In carcinoid syndrome, the part of heart mostly affected is - \nSelect and explain. \nA. Outflow tract of RV, B. Inflow tract of RV, C. Inflow tract of LV, D. Outflow tract LV', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]