A recipe that makes 5 servings of hot chocolate requires 2 squares of chocolate, \dfrac{1}{4} cup sugar, 1 cup water and 4 cups milk. Jordan has 5 squares of chocolate, 2 cups of sugar, lots of water and 7 cups of milk. If she maintains the same ratio of ingredients, what is the greatest number of servings of hot chocolate she can make?
Answer Choices
A. 5 \dfrac{1}{8}
B. 6 \dfrac{1}{4}
C. 7 \dfrac{1}{2}
D. 8 \dfrac{3}{4}
E. 9 \dfrac{7}{8}