Which of the following is a benefit of ISO/IEC 20000 certification?

A.
It guarantees that all certified IT Service Management processes are at least audited by a registeredcertification body once a year.

B.
It shows that a company manages IT Services according to an independently audited quality standard.

C.
It shows that a company takes quality seriously and that each service is independently audited before it is being delivered.

D.
It shows that the highest possible quality level has been achieved.