Router R1 currently has no configuration related to IPv6 or IPv4. The following configuration exis ts in a planning document intended to be used to copy/paste into Router R1 to enable EIGRP for IPv6 on interfaces F0/0 and S0/0/0. No other related configuration exists. Assuming F0/0 and S0/0/0 reach an up/up state, which of the following is true about EIGRP for IPv6 on R1 after this configuration has been pasted into R1?（）
ipv6 router eigrp 1
ipv6 unicast- routing
interface f0/0
ipv6 address 2000::1/64
ipv6 eigrp 1
interface s0/0/0
ipv6 address 2001::/64 eui - 64
ipv6 eigrp 1

A. EIGRP works on F0/0 and S0/0/0 without further configuration
B. EIGRP works with the addition of one command: a no shutdown command in EIGRP router configuration modE
C. EIGRP works with the addition of one command: an eigrp router - id command in EIGRP router configurat ion modE
D. EIGRP for IPv6 needs at least two more configuration commands before it works on R1