This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Major Depression, Subject name: Psychiatry
[{'content': 'Gretaest psychiatric burden in society is due to? \nSelect and explain. \nA. Depression, B. Schizophrenia, C. OCD, D. Alcohol abuse', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ANSWER: (A) Depression.REF: style="font-size: 1.04761904761905em; font-family: Times New Roman, Times, serif; margin: 0 0 8pt 8px; text-indent: 0; text-align: left">Psychiatric disorders contribute 33% of years lived with daily depression contributes to maximum burden followed by problems due to alcohol', 'role': 'assistant'}]