A remote operation center is deploying a set of I-BGP and E-BGP connections for multiple IOS-XR platforms using the same template. The I-BGP sessions exchange prefixes with no apparent issues, but the E-BGP sessions do not exchange routes. What causes this issue?

A. The I-BGP neighbors are mistyped and HELLO packets cannot be exchanged successfully between routers. B. The E-BGP neighbors are not allowed to exchange Information due to the customer platform's default policy. C. A PASS ALL policy has not been implemented for the I-BGP neighbors. D. The next-hop-self command is not implemented on both E-BGP neighbors.