Refer to the exhibit.
R2 does not have R1 1.1.1.1/32 subnet in its BGP table. Which issue can be causing this problem?
| A. |
XR4 does not have next-hop-self for a R2 iBGP session. | |
| B. |
R2 does not have no auto-summary configured. | |
| C. |
XR4 drops any update coming from R1. | |
| D. |
IPv4 address-family is not enabled on R1. |