This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Screening, Subject name: Social & Preventive Medicine
[{'content': 'Screening for which carcinoma is beneficial - \nSelect and explain. \nA. Carcinoma cervix, B. Lung carcinoma, C. Stomach caricinoma, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref:Parks 23rd edition pg 387 Prolonged early phase of the cancer in situ can be detected by the Pap smear. The present strategy is to screen women using visual inspection after application of freshly prepared 5% acetic acid solution.', 'role': 'assistant'}]