This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'Single best moality indicator \nSelect and explain. \nA. CDR, B. PMR, C. ASDR, D. CFR', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ref: Park&;s 23rd edition pg 58 ASDR(Adjusted Standardised Death Rate): here, age adjustment or age standardisation is made, which removes confounding effect of different age structures and yields a single standardised or adjusted rate, by which the moality experience can be compared directly.', 'role': 'assistant'}]