Which of the Following Examples Portrays the 24/7/365 Operation of a Customer

Which of the following examples portrays the 24/7/365 operation of a customer relationship management (CRM) system?

A) Web-based interfaces that provide product information, sales status, support information, issue tracking, and so on
B) enabling improved record keeping and efficient methods of capturing customer complaints that help to identify problems faster
C) tracking customer behavior over time that helps to identify future opportunities for product and service offerings
D) App-based technologies that remove information handoffs thereby speeding both sales and support processes
E) learning how each customer defines product and service quality so that customized product, pricing, and services can be designed or developed collaboratively