In 2020, unit sales of A were 25,000, and unit sales of of B were 19,000. Assume the product mix in 2021 remains the same as in 2020, how many total units must be sold in 2020 in order for X Company to earn profit of $40,000 [round the weighted average contribution margin per unit to two decimal places]?

A: 30,341 B: 34,286 C: 38,743 D: 43,779 E: 49,471 F: 55,902

The following unit-based profit functions were for X Company's only two products, A and B, in 2020: Product A: Pa = $2.39XA - $32,000 Product B: P8 = $5.78X8 - $60,000