21) Factory supplies in a manufacturing plant are most likely A) sunk costs B) period costs. C) variable costs. D) fixed cost. ) How much will a company's net income change if it undertakes an advertising campaign llowing information Cost of advertising campaign Variable expense as a percentage of sales Increase in sales $25,000 42% S60,000 A)S 200 increase B) S25,200 increase C) $15,000 increase D) S 9,800 increase 23) The folloving prodaction and average cost data for a month's operations have been supplied by a company that produces a single product. Production volume Direct materials Direct labor Manufacturing overhead 1,000 units2,000 units $4.00 per unit$4.00 per unit $3.50 per unit $3.50 per unit $10.00 per unit $6.20 per unit The total fixed manufacturing cost and variable manufacturing cost per unit are as foll A) $3,600; $7.50 B) $3,600; $9.90 C) $7.600: $7.50 D) $7,600; $9.90 ows 24) The King Company cost per unit manufactured is: direct materials $20; direct l manufacturing overhead $10 (60 % fixed at 3.000 normal production volum administrative costs are S6 per unit sold and $10,000 fixed. Units sell for $70 selling and Determine the sales volume (S) needed to earn an after-tax profit of $$4,000 asah a tax rate of 40 percent. each, assuming A) 1,120 units B) 2,929 units C) 4,720 units D) 6,520 units