Joe Green Enterprises has met all production requirements for the current month and has an opportunity to produce additional units of product with its excess capacity. Unit selling prices and costs for three models of one of its product lines are as follows: Variable overhead is charged to products on the basis of direct labor dollars, and fixed overhead is charged to products on the basis of machine hours. Required: 1. If Joe Green Enterprises has excess machine capacity and can add more labor as needed (that is, neither machine capacity nor labor is a constraint), the excess production capacity should be devoted to producing which product or products? (Show calculations.) 2. If Joe Green Enterprises has excess machine capacity but a limited amount of labor time, the production capacity should be devoted to producing which product or products? (Show calculations.)