A certain investment that costs $10,000 today promises to pay you $10,500 in five years. This investment ________.

A.

is unambiguously a good investment

B.

is unambiguously a bad investment

C.

may be a good investment if the rate of return you can earn on alternative investments is very high

D.

may be a good investment if the rate of return you can earn an alternative investments is very low