General Mills is a 90-year-old food and beverage company with more than 100 brands in more than 100 countries. General Mills manufactures well-known food and beverage brands such as Pillsbury, Betty Crocker, Nature Valley, Yoplait, Progresso, and Old El Paso. The company recently expanded its portfolio of brands with the purchase of Blue Buffalo pet food. General Mills might best be known for its presence in the cereal aisle at your local grocery store. General Mills manufactures 11 well-known cereal brands including Chex, Cheerios, Total, Wheaties, and Cascadian Farm. Each of these brands has multiple varieties. The addition of Blue Buffalo pet food to General Mills’ portfolio of brands represents .

a. repositioning
b. an increase to the product mix width
c. a product modification
d. a product line extension