The ratio of the number of cups of flour to the number of cups of sugar in a mixture is 2:5. Which of the following best describes the amount of flour and sugar in the mixture?
A.For every 2 cups of flour, there are 7 cups of sugar.
B.For every 7 cups of flour, there are 5 cups of sugar.
C.for every 5 cups of flour, there are 2 cups of sugar.
D.For every 2 cups of flour, there are 5 cups of sugar.