Suppose That Coke and Sprite Each Sell for $2 a Can

Multiple Choice

Suppose that Coke and Sprite each sell for $2 a can. Each month Joe buys 6 cans of Sprite and 30 cans of Coke. From this we can infer that:

A) Joe is buying too many cans of Sprite.
B) Joe is buying too many cans of Coke.
C) Joe is maximizing his utility if his marginal utility from the 6^th can of Sprite he buys is less than his marginal utility from the 30^th can of Coke he buys.
D) Joe is maximizing his utility if his marginal utility from the 6^th can of Sprite he buys is equal to his marginal utility from the 30^th can of Coke he buys.