单选题 Economists think of the missing 10% of holiday spending a deadweight loss because ______.

A、 the cash value of the purchase is lower than the buying price
B、 it makes many people even worse off for spending more on unwanted gifts
C、 with the money the recipients can be better off for no extra cost
D、 it is actually a waste of resources in economic terms

【正确答案】 C

【答案解析】细节题。从文中“a deadweight loss: a waste of resources that..., ...the recipient could then buy what she really wants, and be better off for no extra cost”可以得出答案。