WhichthreestatementsabouttheBGPnext-hopattributearetrue？（）

A．EBGPsessionsbetweenconfederationsubASsdonotmodifythenext-hopattribute. B．Bydefault，iBGPsessionschangethenext-hopattributelearnedfromeBGPpeerstoselfaddress. C．Bydefault，thenext-hopattributeisnotchangedwhenaprefixisreflectedbytheroutereflector D．EBGPsessionsbetweenconfederationsubASschangethenext-hopattributetopeeraddress. E．Bydefault，iBGPsessionspreservethenext-hopattributelearnedfromeBGPpeers.