You purchase a timber tract for $$25,000$ and sell it in eight years for $$50,000.$ Your capital gains tax rate is $28\%.$ What is your after$-$tax Rate of Return?

a$.7\%$

b$.9\mathrm{.}1\%$

c$.8\mathrm{.}4\%$

d$.9\mathrm{.}9\%$