The ios of a north american cisco aironet 1130ag series standalone access point has become corrupt. you must therefore reload the tftp firmwarE. before you press and hold the mode button， you should verify that the file name is which of the following？（）

A. c1130-k9w7-tar.boot
B. c1130-k9w7-tar.123-7.ja1.tar
C. c1130-k9w7-tar.default
D. c1130-k9w7-tar.recover