Trackanddeliver.com is an online retail store that does not require a fixed delivery location and delivers goods to the current location of the customer by tracking the customer's cell phone location. This way customers need not be at home when a package arrives nor have the package delivered to a neighbor. In this scenario, Trackanddeliver.com is considered as a _____

A) symbolic innovation
B) discontinuous innovation
C) radical innovation
D) hedonic innovation
E) functional innovation