Catherine receives $$12,000$ from Linda and repays it by paying $$5,000$ at the end of $2$ years and $$10000$ at the end of $4$ years. Compute the rate of return.

$($A$)6\mathrm{.}9895$

$($B$)7\mathrm{.}9895$

$($C$)8\mathrm{.}9895$

$($D$)9\mathrm{.}9895$

$($E$)$ None of the above