Which of the following statements are the true on the condition that IGP and MPLS are configured correctly on the public network?

As shown I the figure, the asymmetric VLL FRR networking is used AC interfaces on PE 1, PE 2 and PE 3 are configured as follows:

Which of the following statements are the true on the condition that IGP and MPLS are configured correctly on the public network?
A . If a forwarding fault is detected on the PW between PE a and PE 2, traffic from CE 1 to CE 2 can be switched to the PW between PE 1 and PE 3.
B . If a forwarding fault is detected on the PW between PE a and PE 2, traffic can be switched to the backup PW on PE 1.
C . If a forwarding fault is detected on the public network side of the between PE 1 and PE 2, traffic from CE 2 to CE 1 can be switched to the PW between PE 1 and PE3.
D . The PW between PE1 and PE 2 is the primary P

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Answer: A