Youaretroubleshootingaone-waycallproblemwithacisco7920wirelessipphoneonastandalonewlan.Whatmaycausethisproblem?()
A. theminimumdatarateisnotsetto11mbps.
B. anaddressresolutionprotocolhasbeendisabled
C. publiclysecurepacketforwardingisenabled
D. theaccesspointissettotheleastcongestedchannel.