Which Two Statements About the 'Service Request Management' Practice Are

Which two statements about the 'service request management' practice are CORRECT? 1. Service requests are part of normal service delivery
2) Complaints can be handled as service requests
3) Service requests result from a failure in service
4) Normal changes should be handled as service requests

A) 1 and 2
B) 2 and 3
C) 3 and 4
D) 1 and 4