Which of the Following Is Correct Regarding the Product Mix

Which of the following is correct regarding the product mix and product line concepts?

A) A product line is broader than a product mix.
B) The product mix refers to the group of products a company has available for sale.
C) The product line concept applies to physical products, while the product mix concept applies only to services.
D) A product line focuses on convenience goods, while a product mix focuses on shopping goods.
E) A product line is almost always more expensive than a product mix.