Which statement about the BGP scope of the cost community is true?

Which statement about the BGP scope of the cost community is true?
A . It is shared with iBGP neighbors and route reflectors
B . It is shared with iBGP and confederation peers.
C . It is shared with iBGP neighbors only
D . It is shared with iBGP and eBGP neighbors
E . It is shared with eBGP neighbors only

Answer: B