How Do E-Learning Centres Help Salespeople Make Sales

How do e-learning centres help salespeople make sales?

A) Salespeople can refresh their knowledge about company products prior to making sales calls.
B) Salespeople can attend training sessions from their home offices, which saves time and money.
C) E-learning centres enable salespeople and customers to interact through web conferencing.
D) Evaluation diagnostic tools in e-learning centres help managers monitor sales personnel.
E) E-learning centres provide product information to current customers.