According to the principle of rational choice, if there is diminishing marginal utility: select one:
a. and the price received for supplying a good goes up, you supply less of that good.
b. and the price received for supplying a good goes up, you supply more of that good.
c. the decision producers face about how much to supply is not affected.
d. after a certain point, even if the price goes up, you don't supply more of that good.