Your company has just received a new long-term contract to manufacture a product and you need to purchase a new machine for your manufacturing facility. You have the cost information about four similar machines as shown below. Machine Fixed Cost ($/year) Variable Cost ($/unit) A 1,960,000 63 B 1,260,000 73 1,625,000 68 D 1,000,000 82 The unit selling price of the product is $148 per unit. Which machine should you purchase if the annual contract is: [a] 35,000 units? [b] 65,000 units? [c] 73,000 units? You must show your calculation steps and explain your conclusion clearly