What purpose can the ISO/IEC 20000 standard serve?

A.
It helps to decide on the requirements that need to be verified within the scope of a supply
agreement.

B.
It provides a guideline for the Quality Management measures that must be taken in an
organization to implement a quality policy.

C.
It provides a yardstick for the design of a total Quality Management System.

D.
It provides Key Performance Indicators (KPIs) upon which service performance can be
assessed.