A firm is producing a joint​ product, Product A and Product​ B, with variable proportions. At its current production​ levels, the marginal benefit of producing Product A is​ $3 and the marginal cost is​ $2 and the marginal benefit of producing Product B is​ $4 and the marginal cost is​ $5. To maximize​ profits, the managers of the firm should produce​ ________ of Product A and​ ________ of Product B.