As a Cisco Network Engineer, you have to master the knowledge of the Cisco validated Design (CVD) program. Which three of the following descriptions are appropriate about the CVD program?（） (Choose three.)

• A、It incorporates a narrow range of technologies and products.
• B、It facilitates faster and more reliable customer deployments.
• C、It extends the value of designs through a sustained development plan.
• D、It incorporates products and technologies into enterprise, service provider, and commercial systems.