The following table shows William's utility from consuming slices of cake and cans of Sprite. Slices of Total Utility from Cake 0 Cans of Sprite Total Utility from Sprite Cake 0 36 1 66 012345 6 90 108 120 126 Marginal Utility from Last Slice 36 30 24 18 12 6 -2345 6 30 55 75 90 100 105 Marginal Utility from Last Can can(s) of Sprite. 30 25 20 15 10 5 Suppose William has $3.30 per week to spend on cake and Sprite. The price of a slice of cake is $0.60 and the price of a can of Sprite is $0.50. If William wants to maximize his utility, he should buy slice(s) of cake and