What is the objective of the Cisco Compatible Extensions program？（）

• A、to provide access to proprietary Cisco IOS software code in order to expand the number of vendors writing wireless code
• B、to provide Cisco engineers with the opportunity to certify that any wireless devices that are made by third parties are compatible with Cisco wireless products
• C、to provide customers with a broad range of WLAN client devices that have been tested for interoperability with Cisco Aironet innovations
• D、to provide third parties with Cisco hardware in order to encourage the development of radical innovation in the area of wireless