Arrow's Example About the Used Car Is Intended to Show

Arrow's example about the used car is intended to show that:

A) Some sellers in the market are dishonest or unreliable.
B) You should obey the rule "buyer beware" when buying.
C) Sellers should not have to be concerned with social responsibility.
D) Profit maximization leads to the best results for all concerned.
E) Sometimes the rule of profit maximization leads to inefficiency.