This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardio thoracic surgery  , Subject name: Surgery
[{'content': 'Most common sets of Metastases of carcinoma bronchi \nSelect and explain. \nA. Liver + Bones, B. Prostate, C. Kidney, D. Breast', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Distant metastases blood stream are widespread and early.The sites affected,in descending order of involvement,are:the liver,adrenals,bones,pancreas,brain,opposite lung,kidneys & thyroid. Textbook of pathology-6th edition,Harsh Mohan,6th edition,page no:502', 'role': 'assistant'}]