The purpose of the service configuration management practice is to ensure that accurate and reliable information about the configuration of services, and the [?

Identify the missing word in the following sentence.

The purpose of the service configuration management practice is to ensure that accurate and reliable information about the configuration of services, and the [?] that support them, is available when and where it is needed.
A . suppliers
B . CIs
C . customers
D . assets

Answer: B