Which two reasons for IP SLA tracking failure are likely true?

ccnp-dump
ccnp-route-dump
ccnp-route

#1

Refer to Exhibit. Which two reasons for IP SLA tracking failure are likely true? (Choose Two)

A. The source-interface is configured incorrectly.
B. The destination must be 172.30.30.2 for icmp-echo.
C. A route back to the R1 LAN network is missing in R2.
D. The default route has wrong next hop IP address.
E. The threshold value is wrong.

Correct Answer: AC

Explanation:
Ne znam odgovor, negde se spominje B i E a negde A i C