Assignment task: Polly Woodsides is planning to invest her savings of $100,000 into three stocks: ABC, PQR, and KY Z. For each dollar invested, she can expect to get 4%, 6.5%, and 7.5%, respectively. Her investment policy is that: (a) She would invest at most 40% of her money in any one stock (b) The amount of money invested in ABC should be at least as much as the amount invested in KY Z. (c) At least 25% of her money should be invested in PQR. Formulate an LP to maximize the total return on Polly's investment.