​An Airline's Flight Is About to Take Off

Multiple Choice

​An airline's flight is about to take off.It has a few empty seats left aboard.If it lowers its prices,it can fill the remaining seats and fly at full capacity.What should be done?

A) ​Sell the additional standby seats at a discount since the marginal costs of the additional passenger are almost zero and fly at full capacity
B) Sell the additional standby seats without a discount
C) Don't offer the additional seats for any price
D) ​none of the above