All of the Following Were Important Aspects Contributing to the Success

All of the following were important aspects contributing to the success of e-commerce, except:

A) the development of electronic payment systems such as PayPal, which eased the process of online purchases.
B) the development of secure protocols and other technological enhancements that permitted the secure transfer of electronic funds and enhanced e-commerce security.
C) electronic shopping carts that allowed users to maintain a running collection of items and purchase those items in a single transaction.
D) facilities that permit a user to search for and compare items in various ways.
E) traditional "bricks and mortar" businesses declining to develop a competitive online presence.