单选题 Is a gold mine an example of a renewable or non-renewable resource and is the supply curve of gold perfectly elastic or inelastic in theory? Type of resource Supply curve ①A. Renewable Inelastic ②B. Renewable Elastic ③C. Non-renewable Elastic

A、

A. ①
B、

B. ②
C、

C. ③

【正确答案】 C

【答案解析】There is a fixed amount of gold ore in the world so it is treated as a non-renewable natural resource. As such, its supply curve is horizontal (perfectly elastic) at a price equal to the present value of its expected price next period.