Capital Project Knapsack$-$ You have the following capital project with different costs and value. You have a total project budget of $10M.$ Develop a formulation to maximize the value of the project minus the cost of the projects. Similar problem is always an important part of test $1.$

$\backslash$table$[[$Project$,$Cost $(m),$Value$],[1,1,1\mathrm{.}1],[2,2\mathrm{.}1,3],[3,\mathrm{.}5,1\mathrm{.}2],[4,3,]]$

B$.$ Add a constraint that only one of project $5$ or $6$ can be done

C$.$ Add a constraint that in order to do project $8$ project $7$ must also be selected

D$.$ Add a constraint that allows you to only do project $9$ and $10$