Which statement best describes the reason for using IBM Cloud Computing Reference Architecture (CCRA) adoption patterns?
A. The IBM CCRA adoption patterns define the integration between all IBM products.
B. To avoid network configurations which lead to poor performance of cloud services.
C. To successfully migrate from an on-premise to an off-premise implementation and reduce hosting costs.
D. To leverage the experience of many IBM cloud customer engagements to design cloud computing according to specific needs.