$(((($EXPECTED MONETARY VALUE$))))$

Nexus Solutions, a new start$-$up$,$ is currently upgrading its security systems. The chief security officer, Clark Robinson, has conducted a risk analysis. The security team estimates a $20\%$ probability of a significant security mishap in the next five years. Robinson has three options to consider:

Option $1$: Educate the employees and prepare them for a security event at a cost of $$40,000.$

Option $2$: Improve the firm's security system at a cost of $$60,000.$

Option $3$: Do nothing.

In the event of a security mishap, the firm will incur costs of $$25000$ if Option $1$ is chosen, $$10000$ if Option $2$ is chosen, and $$80000$ if Option $3$ is chosen. What should Robinson do$?$ if she chooses option $3.$ What should he do$?$