Q3: Arab, Inc. currently makes all sales on credit and offers no cash discount. The firm is considering a 3 percent cash discount for payment within 10 days. The firm's current average collection period is 50 days, sales are 400 units per year, selling price is $25,000 per unit, and variable cost is $20,000 per unit. The firm expects that the change in credit terms will result in a minor increase in sales of 50 units per year that 75% of the customers will take the discount, and the average collection period will drop to 30 days. The firm's bad debt expense is expected to have no change under the proposed plan. The firm's required return on equal-risk investments is 15%. (Year = 365 days) A) What is the firm's additional profit contribution from sales under the proposed plan of initiating the cash discount? 1 mark B) What is the cost of marginal investment in accounts receivable under the proposed plan? 3 marks C) What is the cost of cash discount? 1 mark D) What is Net profit (loss) from initiation of proposed cash discount? 1 mark