You have an initial capital of $$1000.$ You purchase $$800$ worth of Stock $A($long position$).$ You also sell short $$600$ worth of Stock B$.$ If your profit is $$100$ by the end of the year, what is your rate of return?

$10\%$

$12\mathrm{.}5\%$

$16\mathrm{.}7\%$

$7\mathrm{.}1\%$