This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Development, and Behavior, Subject name: Pediatrics
[{'content': 'Intelligence quotient is calculated as: \nSelect and explain. \nA. Mental age/Chronological age x100, B. Chronological age/Mental Age x100, C. Mental age x Chronological age, D. Mental age + chronological age/2', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. Mental age/ Chronological age x100An intelligence quotient (IQ) is a total score derived from several standardized tests designed to assess human intelligence. The intelligence quotientIntelligence quotient (IQ) refers to mental age (MA) expressed as a ratio of chronological age (CA) multiplied by 100. Intellect comprises perception, memory, recognition, conceptualization, convergent and divergent reasoning, verbal ability and motor competence. . There are various intelligence tests that have been devised. Few of them are Phataak adaptation of Bayley scale, Kulshrestha adaptation of Standford Binet test.', 'role': 'assistant'}]