Maria Is Considering Her Lunch Purchase

Maria is considering her lunch purchase.Unfortunately,the deli doesn't have a very extensive menu: apples at $0.50 each,bagels at $1 each,and cappuccino at $2 each.Her utility from each is shown in the table below.

-If a consumer buys more than one unit of a product,which of the following statements is true?

A) The value of the last unit purchased must be greater than the value of the previous units,otherwise it would not be bought.
B) The consumer rates the value of each unit equally,otherwise she would not buy more of the item.
C) The value of the last unit purchased is always less than the value of the previous units.
D) It is the value of the first unit purchased which determines the total number of units which will be purchased.