Which is included in the purpose of the 'service level management' practice?

Which is included in the purpose of the ‘service level management’ practice?

Which is included in the purpose of the ‘service level management’ practice?
A . To maximize the number of successful service and product changes
B . To ensure accurate information about the configuration of services is available
C . To set clear business-based targets for service levels
D . To ensure that suppliers and their performance are managed appropriately

Answer: C