Consider a two$-$period binomial model, where each period is $6$ months. Assume the stock price is $$75\mathrm{.}00,\backslash$sigma $=0\mathrm{.}35,$ and r $=0\mathrm{.}05.$ An American call option with a strike price of $$80$ would be

exercised early at what dividend yield? $()$

$($A$)5\mathrm{.}0\%$

$($B$)7\mathrm{.}0\%$

$($C$)9\mathrm{.}0\%$

$($D$)$ Never exercise early