The DesMaris Company had the following income statement for the month of November 2018: DesMaris Company Income Statement For the Month of November 2018 Sales ($60x10,000) $600,000 Cost of goods sold: Direct materials ($12 x 10,000) $120,000 Direct labor ($9 x 10,000) 90,000 Variable factory overhead ($7.50 10,000) 75,000 Fixed factory overhead 120,000 405,000 $195,000 Gross profit Selling and administrative expenses: $ 15,000 Variable ($1.50 10,000) 90,000 105,000 Fixed Operating income $ 90,000 If the monthly sales volume increases by 450 units, DesMaris Company's monthly profits will increase by Oa. $14,175.00. O b.$1,282.50. Oc. $9.450.00. O d.$13.500.00