If the risk$-$free rate of interest $(r_f)$ is $7\%,$ then you should be indifferent between receiving $$750$ today or

A$.$ $$700\mathrm{.}93$ in one year.

B$.$ $$802\mathrm{.}50$ in one year.

C$.$ $$750\mathrm{.}00$ in one year.

D$.$ none of the above