Why should iBGP sessions be fully meshed within a Transit AS?（）

• A、BGP requires redundant TCP sessions between iBGP peers.
• B、Routes learned via eBGP are never propagated to other iBGP peers.
• C、A full mesh allows for optimal routing within the Transit AS.
• D、Routes learned via iBGP are never propagated to other eBGP peers.
• E、Routes learned via iBGP are never propagated t o other iBGP peers.