$14.$ Today, Stacy is investing $$18,000$ at $6\mathrm{.}72$ percent, compounded annually, for $5$ years. How much additional income could she earn if she had invested this amount at $7\mathrm{.}15$ percent, compounded annually?A$.$ $$43\mathrm{.}11$B$.$ $$506\mathrm{.}06$C$.$ $$401\mathrm{.}16$D$.$ $$442\mathrm{.}79$E$.$ $$484\mathrm{.}08$