Below is the solution to the capital budgeting problem worked in class.$$ Using the optimal solution that is given add the following constraints to the problem and solve it again.

A$.$ At most $2$ of the first $4$ projects can be selected.

B$.$ If investment $1$ is selected, then investment $2$ must also be selected.$($However$,$ this does NOT mean that if investment $2$ is selected, then investment $1$ must also be selected.$)$

C$.$ At least $1$ of the last two projects $(6-7)$ must be selected.

D$.$ Format your constraints appropriately.