Prepare a product-by value analyis for the following products, and given the postion in its lfe cycle, idently the issune likely lo cortront the operators manager, and tis or her potsbie actora. Product Npha has annual sales of 1,000 units and a contribution of $2,600 per unit it is in the introductory stage. Produd Brevo has annual sales of 1,600 inith end a contitution ef $3, 000 per unt it is in the growth stage. Product Charie has annual sales of 3,500 units and a contribution of 51,750 per unt it is in the dedine atage