When Computing the Benefits of CRM or "What Did We

When computing the benefits of CRM or "what did we get in return?", experience indicates

A) Given today's scientific measures, it is quite easy
B) This is the one area of CRM that all companies consistently dp
C) There are 5 key effectives measure everyone agrees on
D) It is much easier for small companies than for large companies
E) All the above are false.