In BGP routing protocol, which of the following statements about next-hop attribute of route is correct?

A、WhenaBGProuteradvertisesrouteslearnedfromotherEBGProuterstoaIBGProuter,thenext-hopattributeofroutewillbechanged;
B、WhenaBGProuteradvertisesrouteslearnedfromotherEBGProuterstoaEBGProuter,thenext-hopattributeofroutewillnotbechanged;
C、WhenaBGProuteradvertisesrouteslearnedfromotherEBGProuterstoaIBGProuter,thenext-hopattributeofroutewillnotbechanged;
D、Next-hopattributeisoptionalnon-transitive.