Supply Curves Generally Slope Upward Because of All of the Following

Multiple Choice

Supply curves generally slope upward because of all of the following reasons except one.Which is the exception?

A) Producers are willing to offer more of a good at higher prices.
B) A higher price attracts resources from less-valued uses.
C) Producers must be compensated for the rising opportunity cost of additional output.
D) Producers have a greater incentive to sell more as the price increases.
E) The price of a good usually must fall to induce an increase in quantity supplied.