[Use Matrix Method] A health company produces 3 products, and the calcium
requirements per package of the products are 6000 units, 9000 units and 12000 units.Each month, there are 180000 units of calcium available. If combined monthly production for the 3 products should equal 20 packages, determine whether there are any combinations of the 3 products which would exhaust the monthly availabilities of calcium and meet the production goal of 20 packages.