The following unit-based profit functions are for X Company's only two products, A and B, last year: Product A: PA = $3.77XA - $37,000 Product B: PB = - $4.55XB $61,000 Unit sales of A were 23,000, and unit sales of of B were 16,000. Assuming there is no change in the product mix, how many total units must be sold next year in order for X Company to earn profit of $47,000 [round the weighted average contribution margin per unit to two decimal places]? A: 14,521 B: 18,152 C: 22,689 OD: 28,362 E: 35,452 F: 44,315 2100