The Relationship Between the Marginal Utility That David Gets from Eating

Multiple Choice

The relationship between the marginal utility that David gets from eating ice cream sundaes and the number of ice cream cones he eats per week is as follows:
David receives 3 units of utility from the last dollar spent on each of the other goods he consumes.If ice cream sundaes cost $4 each,how many ice cream sundaes will he consume per month if he maximizes utility?

A) 2
B) 3
C) 4
D) 5