In a Wax Business Two Types Are Made, Jar Wax $\$ 4.00$

Multiple Choice

In a wax business two types are made, jar wax and tube wax. The selling price of jar wax is $\$ 4.00$ per unit and tube wax is $\$ 3.00$ per unit. Let $X_{1}$ be the number of units of jar wax sold and $X_{2}$ the number of units of tube wax sold. Direct costs for each type of wax are $\$ 0.025$ times the square of the number of units sold. Profit contribution for this business is given by

A) $4 X_{1}+3 X_{2}$
B) $4 X_{1}+3 X_{2}-0.025 X_{1}^{2}$
C) $4 X_{1}+3 X_{2}-0.025 X_{1}^{2}-0.025 X_{2}^{2}$
D) $4 X_{1}+3 X_{2}+0.025 X_{1}^{2}+0.025 X_{2}^{2}$