When router R1 forwards a PATH message to router R2, which of the following about the PATH message’s IP header is TRUE?

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When router R1 forwards a PATH message to router R2, which of the following about the PATH message’s IP header is TRUE?
A . The options field is set to router alert.
B . The source address is R1’s egress interface address.
C . The destination address is R2’s ingress interface address.
D . The HOP object includes R2’s system address.

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Answer: A