This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood Disorders, Subject name: Psychiatry
[{'content': 'Depression patients in developing countries most prominently show which of the following feature? \nSelect and explain. \nA. Low mood, B. Sleep disturbance, C. Vague body aches, D. Suicidal tendancy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Multiple physical symptoms (such as heaviness of head, vague body aches) are paicularly common in the elderly depressives and depressed patients from the developing countries (such as India) * MC psychiatric disorder in India: Depression * Neurotransmitter involved: Serotonin and nor-epinephrine * MC cause of suicide: DepressionRisk features of suicide in depression: * Endogenous type of depression * Psychotic depression * MC type of post-puerperal psychosis: Depression * Nihilistic ideas: Seen in depression', 'role': 'assistant'}]