Elena owned a hair salon where she offered hair care services and related hair care products.

In which of the following ways would Elena market the hair care services differently than the hair care products?

She would focus on the variety of items available for customers to purchase.

She would focus on advertising the salon's upscale location and decor.

She would focus on advertising that the salon uses hair products endorsed by celebrities.

She would focus on the skill level and technique provided by the stylists.