Let the continuous decision variables x1, x2, x3, and x4 be the production levels of products 1, 2, 3, and 4, respectively. Management has imposed the following policy constraints on these variables: i. No more than two of the products can be produced. ii. Product 3 can be produced only if product 1 is produced. iii. Product 4 can be produced only if either product 1 or 2 is produced