The ios of a north american cisco aironet 1230 series access point has become corrupt，  necessitating the need for a tftp firmware reload. Before you press and hold the mode button，what must the file be named in order for the reload to occur？（）

• A、c1200-k9w7-tar.default
• B、c1200-k9w7-tar.boot
• C、c1200-k9w7-tar.123-7.ja1.tar
• D、c1200-k9w7-tar.recover