Assume the following data for 139,000 units of a product that Water Source Company expects to produce and sell during the current year: Manufacturing costs: Direct materials $1,223,000 Direct labor 3,428,000 Factory overhead: Variable costs $379,000 Fixed costs 198,000 577,000 Total manufacturing costs $5,228,000 Selling and administrative expenses: Variable expenses $368,000 Fixed costs 659,000 Total selling and administrative expenses 1,027,000 Total cost $6,255,000 Desired rate of return 28% Total assets $1,382,000 What will the normal selling price per unit be if calculated using the total cost concept? (Round the computations to two decimal places.) a. $47.78 b. $45.00 c. $42.22 d. $23.89