Frank's Utility Function Is U = 10X + 6Y

Multiple Choice

Frank's utility function is U = 10X + 6Y. Frank has a budget of $60 to spend on goods X and Y. The price of good X is $3 and the price of good Y is $2. How many units of good X and good Y does Frank purchase?

A) X = 20 and Y = 0
B) X = 0 and Y = 10
C) X = 15 and Y = 5
D) X = 10 and Y = 20