Arvind Mills Ltd$.$ is considering two mutually exclusive investment proposals for its expansion progrens Proposal A requires an initial investment of $7,50,000$ and yearly cash operating costs of $50,000P.$ B requires an initial investment of $5,00,000$ and yearly cash operating costs of $1,00,000.$ The life ds equipment used in both the investment proposals will be $12$ years, with no salvage value; depreciation is the straight$-$line basis for tax purposes. The anticipated increase in revenues is $1,50,000$ per year in bobs investment proposals. The firm's tax rate is $35\%$ and its cost of capital is $15\%.$ Which investment proposal should be undertaken by the company?