In Making Decisions About What to Consume, a Person's Goal

In making decisions about what to consume, a person's goal is to

A) allocate her limited income among all the products she wishes to buy so that she receives the highest total utility.
B) buy low-priced goods rather than high-priced goods.
C) maximise her marginal utility from the goods and services she wishes to buy using her limited income.
D) consume as many necessities as possible and then, if there is money left over, buy luxuries.