There is only one petrol station within hundreds of miles.The owner finds that when she charges $3 a litre,she sells 99 litres a day,and when she charges $2.95 a litre,she sells 100 litres a day.The marginal revenue of the 100th litre of petrol is:
A)-$5.
B)-$2.
C)$0.
D)$3.
E)$6.

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The Answer of There is only one petrol station within hundreds of miles.The owner finds that when she charges $3 a litre,she sells 99 litres a day,and when she charges $2.95 a litre,she sells 100 litres a day.The marginal revenue of the 100th litre of petrol is:
A)-$5.
B)-$2.
C)$0.
D)$3.
E)$6.

There Is Only One Petrol Station Within Hundreds of Miles