This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'The most common cancer, affecting both male and females of the world, is - \nSelect and explain. \nA. Cancer of the pancreas, B. Buccal mucosa cancer, C. Lung cancer, D. Colo-rectal cancer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: <p> Earlier it was lung cancer. But now it is lip,oral cavity cancer. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:384.& Text book of community medicine by Sundar Lal,2nd ed, pg no:613. <\\p>', 'role': 'assistant'}]