This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impoant Bacterial Diseases in Children, Subject name: Pediatrics
[{'content': 'Most common organ involved by congenital TB is: \nSelect and explain. \nA. Liver, B. Pancreas, C. Kidney, D. Lung', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most common organ involved by congenital TB is: Liver', 'role': 'assistant'}]