Cecilia has studied economics and knows about the value and investment potential of diamonds. The price of diamonds has recently decreased, and a new diamond mine has opened nearby. Cecilia decides to buy a diamond necklace while the prices are lower.

How did Cecilia’s knowledge of economics help her make a savvy commodity purchase?


A. She knew that diamonds are popular and in high demand.
B.She knew that diamonds are a nonrenewable resource, making them scarce.
C.She knew that the cost of diamonds depends only on the demand.
D.She knew that the purchase of diamonds will satisfy wants and needs.

(its not C i got it wrong on Edg. someone help pls)