Arthur Company had the following data for the year just ended: Sales Sales price Variable cost Fixed costs 4,000 units $60 per unit $18 per unit $42,000 Question 18 (1 point) If the company wants to increase its total contribution margin by 40% in the next year, all other factors remaining the same, it will need to increase its sales by: $50,400 $72,000. O $67,200 $96,000. Question 19 (1 point) If the company wants its margin of safety to equal $35,000 next year, all other factors remaining the same, how many units will it need to sell (round your final answer to the nearest whole number) 1,833. 1,583. 1,000. 833