求大佬帮助解答以下ccna题目

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Refer to the exhibit. An engineer is configuring the New York router to reach the Lo1 interface of the Atlanta router using interface Se0/0/0 as the primary path.
Which two commands must be configured on the New York router so that it reaches the Lo1 interface of the Atlanta router via Washington when the link between
New York and Atlanta goes down? (Choose two.)

• A. Ipv6 route 2000::1/128 2012::1
• B. Ipv6 route 2000::1/128 2012::1 5
• C. Ipv6 route 2000::1/128 2012::2
• D. Ipv6 route 2000::1/128 2023::2 5
• E. Ipv6 route 2000::1/128 2023::3 5
  

不太明白为什么A选项也是对的？不是题目中说了new york和亚特兰大之间的线路down了么？se0/0/0 down了

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