Identify the correct statement

The respiratory quotient depends upon the type of respiratory substrate used during respiration.E.g., When carbohydrates are used as substrate and are completely oxidised, the RQ will be 1 because equal amounts of CO2 and O2 are evolved and consumed.When fats are used as respiratory substrate, the RQ is less than 1The RQ for proteins in aerobic respiration is between 0.8 to 0.9.