RYAN'S RUNNERS MINI CASE: Ryan Wants to Open a Store

RYAN'S RUNNERS MINI CASE: Ryan wants to open a store that caters to athletes, but, due to space and budgetary constraints, he recognizes that he will not be able to offer the same variety and selection of products as does the local athletic mega-store, so he has decided to focus specifically on runners. He stocks shoes and related gear for runners, and maintains a staff that is knowledgeable and enthusiastic about running. Ryan's advertising campaign emphasizes his store's high standard of customer service and selection of products specifically tailored to meet the needs of the runner.
-In the RYAN'S RUNNERS MINI CASE, which of the four elements of the marketing mix does Ryan use to differentiate his store in the marketplace?

A) place
B) positioning
C) promotion
D) price
E) product/service