Kelley Company has provided the following information: 47 Sales price per unit Variable cost per unit Fixed costs per month Units sold $126 93 21,000 1,000 Calculate the contribution margin per unit. O A. $21 O B. $33 OC. $43 OD. $29 Which of the following will lower the breakeven point (with all other factors held constant)? O A. an increase in the sales price per unit B. a decrease in the sales price per unit C. an increase in the variable cost per unit OD. an increase in total fixed costs