Which of the following best expresses the law of diminishing marginal utility?

(A) The more a person consumes of a product, the smaller becomes the utility which
he receives from its consumption.
(B) The more a person consumes of a product, the smaller becomes the
additional utility which she receives as a result of consuming an additional
unit of the product.
(C) The less a person consumes of a product, the smaller becomes the utility which
she receives from its consumption.
(D) The less a person consumes of a product, the smaller becomes the additional
utility which he receives as a result of consuming an additional unit of the
product.