Which two of these statements best describe the benefits of the Cisco Compatible Extensions Program？ （Choose two.）（）

• A、 offers a feature-rich implementation alternative to Wi-Fi certification
• B、 accelerates the availability of innovative features while maintaining interoperability
• C、 provides innovative features only on Cisco’s wireless client adapters
• D、 provides an evolving set of specifications for interoperability
• E、 eliminates the need for testing by providing innovative features to wireless client vendors through a one-time license fee