RTX Inc. $($a U$.$S$.$ based firm$)$ negotiates a conditional currency call options with a bank to hedge its accounts payable of $890$ million South Korean won due on April $30.$ RTX will only exercise its option on the due date. The terms of the conditional currency call options are as follows: K $($exercise price$)=$ $$0\mathrm{.}00070$ per South Korean won, Trigger $=$ $$0\mathrm{.}00068$ per South Korean won, premium $=$ $$0\mathrm{.}00010$ per South Korean won, expiration date $=$ April $30.$ If the spot rate on the due date, i$.$e$.,$ April $30,$ is $$0\mathrm{.}00069$ per South Korean won, what is the amount of U$.$S$.$ dollar RTX expects to pay for its $890$ million South Korean won? Question $19$ options: $$703,100.$ $$712,000.$ $$623,000.$ $$614,100.$