Refer to the exhibit. What statement is true about the debug output?

- R2 is using PAP instead of CHAP.
- The routers have different CHAP passwords configured.
- The administrator performed a shutdown on the R2 PPP interface during negotiation.
- The Layer 3 protocol negotiation caused the connection failure.
Related exam: CCNA Discovery 3: DRSEnt Chapter 7 Exam
