Refer to the exhibit. The iPv6 address for the LAN segment on router R2 must be configured using the EUI-64 format. Which address must be used?

Assuming R2's interface MAC address begins with `12A0.AB` and ends with `CC.0001`, the EUI-64 process involves splitting `12A0.AB` and `CC.0001`, inserting `FFFE`, and then flipping the 7th bit of the first byte (`12` hex becomes `10` hex) to form `10A0:ABFF:FECC:0001`. Appending this to the given prefix `2001:DB8:D8D2:1009::/64` results in `2001:DB8:D8D2:1009:10A0:ABFF:FECC:1`.

This address's interface identifier `1230:ABFF:FECC:1` does not conform to the EUI-64 derivation rules from a standard MAC address (specifically, the `1230` part and the `1` at the end are inconsistent with common MAC structures).

The interface identifier `4347:31FF:FF47:0` does not align with the EUI-64 formation by inserting FFFE and flipping the 7th bit based on typical MAC address patterns.

The interface identifier `12A0:AB34:FFCC:1` shows `AB34` before `FFCC`, which incorrectly places the `FFFE` insertion, making it inconsistent with the EUI-64 standard.