Mark Company, Inc. sells electronics. The company generated sales of $$45,000.$ Contribution margin is $$20,000$ and net income is $$4,000.$ Based on this information, the magnitude of operating leverage is:

A$.2\mathrm{.}25$

B$.11\mathrm{.}25$

C$.5\mathrm{.}00$

D$.6\mathrm{.}25$