Galore Appliances continually updates its refrigerator lineup to reflect market trends and customer needs. Although the product category is in the maturity stage of the product life cycle, the company maintains sales of its refrigerator line at a high level ________. 

 

A. by testing new concepts

B. by modifying the marketing mix

C. by changing the brand image of its product line

D. by modifying the product

E. by developing the market