Suppose You Are Eating Slices of Pizza and After Consuming

Suppose you are eating slices of pizza and after consuming the first slice you receive 14 utils of total utility, after the second you receive 22 utils of total utility, and after the third 25 utils of total utility. Then

A) the law of diminishing marginal utility is not applicable because your total utility is increasing instead of diminishing.
B) your total utility is 61 utils.
C) your total utility is 25 utils, and the marginal utility of the first slice is 8 utils (22 - 14) .
D) your total utility is 25 utils, and the marginal utility of the third slice is 3 utils.