Answer:
The correct answer is option C.
Step-by-step explanation:
The law of diminishing marginal utility means that keeping other things at constant the marginal utility derived from the consumption of a commodity goes on declining with each additional unit of the commodity.
So, the marginal utility from the first unit will be highest, that from second unit will be lesser, that from third even lower and so on.
In the examples given above, Wesly's case is most applicable to this.
So, option C is the correct answer.