Answer :
If the price of product x rises, then the resulting decline in the amount purchased will increase the marginal utility of this good.
The difference in overall utility that results from consuming one extra unit of a good is known as marginal utility. Economists utilize the idea of marginal utility to estimate the quantity of a good that consumers will buy.
When the overall utility is increased by the consumption of an additional item, positive marginal utility occurs. On the other side, negative marginal utility arises when the overall utility is reduced by the consumption of one extra unit. Progressive taxation are frequently defended using the law of diminishing marginal utility.
Negative, zero, or positive marginal utility are all possible.
Hence, option B is the correct answer
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