正解:D
"A better approach is the development of operational metrics, which are usually easily discovered and measured. The next step is to transform those operational metrics into different metrics, stated in business terms, FOR BUSINESS AUDIENCES. In a given organization, a security program might employ two, three, or more layers of metrics, usually related to each other, and stated in relevant technical or business terms for each RESPECTIVE AUDIENCE." - CISM All-In-One Study Guide, P.H. Gregory, 1st Edition