One Reason Supply Curves Have an Upward Slope Is Because

Multiple Choice

One reason supply curves have an upward slope is because

A) increased supply will require increased technology.
B) people will pay a higher price when less is supplied.
C) a higher price brings a greater profit, so firms want to sell more of that good.
D) to have more of the good supplied requires more firms to open.
E) None of the above answers is correct because supply curves have a downward slope.