Use the following to answer questions $19-22$

$19.$ This firm's break$-$even point is

A$)4,800$ units

B$)14,634$ units

C$)7,142$ units

D$)18,000$ units

$20.$ The Degree of Operating Leverage $($DOL$)$ is

A$)1\mathrm{.}58$x

B$)1\mathrm{.}95$x

C$)3\mathrm{.}50$x

D$)1\mathrm{.}40$x

$21.$ The Degree of Financial Leverage $($DFL$)$ is

A$)3\mathrm{.}50$x

B$)1\mathrm{.}40$x

C$)1\mathrm{.}95$x

D$)1\mathrm{.}58$x

$22.$ The Degree of Combined Leverage $($D$.$C$.$L$.)$ is

A$)3\mathrm{.}08$x

B$)5\mathrm{.}45$x

C$)2\mathrm{.}73$x

D$)6\mathrm{.}83$x