Smartphone Apps Are Providing Stiff Competition for Physical Retail Stores

Multiple Choice

Smartphone apps are providing stiff competition for physical retail stores because

A) consumers using the app Instagram can shop instantly.
B) consumers can "tweet" their product preferences.
C) consumers can create and save shopping lists on their smartphones.
D) consumers can simultaneously check and prices at other stores while shopping for a product in a brick-and-mortar retail store.
E) consumers using the app ShopKick receive credit,discounts,and other incentives for walking into a brick-and-mortar retail store.