9. (12 points) Perez Co. produces and sells two products (X and Z). The following data relate to the two products: Per Unit: Selling price Direct materials costs Direct labor costs Overhead costs Labor time in minutes per unit Demand in units X $ 160 $ 80 20 7 Z $ 150 $ 90 30 10 20 10 150 100 a. Which is the most profitable product if there is no constraint on labor time (Show calculations to support your answer)? b. Which is the most profitable product if there is a constraint on labor time, so that total demand for all products cannot be met (Show calculations to support your answer)? C. Assuming there is a constraint on labor time and with the current employees a total of 3,500 labor minutes are available per day. Indicate the number of units to be made for each product that maximizes profits given the labor constraint