A company nas sales of $\frac{\text{\$}}{5},000$ at the break$-$even point and fixed costs are $$37,500.$ A suming cost behaviour does not change if sales increase by

$$20,000$ how much operating income will increase by$?$

Multiple Choice

$$10,000\mathrm{.}00$

$$11,500\mathrm{.}00$

$$12,500\mathrm{.}00$

$$37,500\mathrm{.}00$