For managers attempting to maximize operating income for a product offering with differing degrees of production complexity, product-mix decisions must usually take into account:

	a.	more than one constraining resource
	b.	just those products with the greatest contribution margin per constraining resource
	c.	products that produce a profit above the full costs of the product
	d.	how to maximize the selling price of all the products
	e.	both b and c are correct