1. Rent will be produced at that time when ?(A) Entire land is fertile(B) Elasticity of supply of land is perfectly elastic(C) Land is mobile(D) None of the aboveAns : (D) 2. The Example of derived demand is—(A) Demand for labour(B) Demand for tea(C) Demand for consumable commodity(D) Income demandAns : (A) 3. Which of the following is an active factor of production ?(A) Land (B) Labour(C)