Which of the following BEST describes an operational level agreement (OLA)?

A.
It contains targets that underpin those within an SLA to ensure that targets will not be breached by failure of
the supporting activity.

B.
It is an agreement between a supplier and another part of the same organization that assists with the
provision of services.

C.
It is a written agreement between a supplier and the IT customer(s), defining the key service targets and
responsibilities of both parties.

D.
It is a legally binding contract outlining services delivered to an IT service provider that underpin a service
that provider delivers to its customers.

Explanation:
http://wiki.en.it-processmaps.com/index.php/Service_Level_Management