Compared to Rationing by Prices,non-Price Rationing by Queuing

Compared to rationing by prices,non-price rationing by queuing:

A) is more efficient in that those who value the good or service most are more likely to get some.
B) is less efficient in that waiting in line imposes a cost on those waiting in line,with no offsetting benefit to the seller.
C) is less efficient in that in order to sell more of the good or service,suppliers will have to increase the quality of their product beyond what the consumer desires.
D) is more efficient in that in order to sell more of the good or service,suppliers will have to increase the quality of their product beyond what the consumer desires.