Which of the following best describes the purpose of using lifecycle services for deploying an advanced wireless solution？（）

• A、Maximize the number of services required to support advanced technologies.
• B、Provide a consistent，repeatable，and proven method to ensure the network solution that is deployed delivers upon the customer’s goals for reliability and availability.
• C、Reinforce customer confidence in partners selling products.
• D、More clearly define the roles of account managers，systems engineers，and field engineers.
• E、Create a more effective sales strategy for partners.