In April 2014, the Money Price of a Litre of Milk

In April 2014, the money price of a litre of milk was $2.01 and the money price of a litre of gasoline was $1.30. The real price of a litre of gasoline in terms of milk was

A) $0.65.
B) 0.65 litres of milk.
C) 2.61 litres of milk.
D) 1.54 litres of milk.
E) $0.71.