AusercannotpinganyotherhostnamesfromanAIXmachine.Theerrorreceivedis"hostnameearthNOTFOUND".Whichofthefollowingfilesismostlikelyconfiguredincorrectly?()

A./etc/resolv.conf

B./etc/rc.tcpip

C./etc/aliases

D./etc/hosts.equiv