The Textbook Introduced to Us a Ten Step Selling Process

The textbook introduced to us a ten step selling process starting with prospecting (step 1) and ending with follow up (step 10) .Britnee,has successfully sold an existing client a new line of computers.She is considering making a follow-up visit to the client to make sure the product line is meeting the customer's expectations.Before making the call,which of the following questions should Britnee consider?

A) Who should she call to follow up with?
B) Should she call everyone that was involved with the purchase?
C) When should she call the client - in a month, a few weeks, a few days?
D) What method should she use to contact the client - phone, in-person, Skype?
E) All of these choices are correct