A bank has 12 million Euro , which can be invested into stocks of five companies (1, 2, 3,4 and 5) to get more profits. The table reports for each company, the net revenue and the amount of money in million that must be invested into it, Solve the problem with a branch and bound algorithm Note that partial investiment is not possible

'Company 1 2 . 3 . 4 . 5

Revenue . 10 15 6 . 8 . 4

Money 4 . 6 . 3 . 4 . 2