GAUSS7 2000 Problem 12

A recipe requires 25\:mL of butter to be used along with 125\:mL of sugar. If 1000\:mL of sugar is used, how much butter would be required?

Answer Choices
A. 100\:mL
B. 500\:mL
C. 200\:mL
D. 3 litres
E. 400\:mL