Alexa is making a recipe that requires 1 cup of water and 4 cups of flour. Which of the following combinations shows the same ratio of water to flour?

A. 2 cups of water to 3 cups of water

B. 2 cups of water to 4 cups of flour

C. 2 cups of water to 8 cups of flour

D. 3 cups of water to 6 cups of flour