A consumer maximizes total utility from a given amount of income when the

A consumer maximizes total utility from a given amount of income when the? A:marginal utility obtained from the last dollar spent on each good is the same

B:MU of the last unit of each good is the same

C:total utility obtained from each product is the same

D:Amount spend for each product is the same

In this question A and B are essentially the same so which do you think is correct or can you choose both?