This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Social & Preventive Medicine
Respiratory quotient of carbohydrate is: 
Select and explain. 
A. 0.5, B. 0.8, C. 0.75, D. 1
D: 1
Answer: D: 1 
Explanation: ref : Park 24 edition The respiratory quotient (or RQ or respiratory coefficient), is a dimensionless number used in calculations of basal metabolic rate (BMR) when estimated from carbon dioxide production. It is calculated from the ratio of carbon dioxide produced by the body to oxygen consumed by the body. Such measurements, like measurements of oxygen uptake, are forms of indirect calorimetry. It is measured using a respirometer. The respiratory quotient (RQ) is the ratio