A recipe requires one quarter cup of milk as a base and then, in addition, 1 cup of milk for every 4 cups...

A recipe requires one quarter cup of milk as a base and then, in addition, 1 cup of milk for every 4 cups of flour. Choose a linear equation that describes the relationship.
A. y = 4x + 4
B. y = 4x + 1/4
C. y = 1/4x + 4
D. y = 1/4x + 1/4