Refer to the exhibit.
R1 is configured with IP SLA to check the availability of the server behind R6 but it kept failing. Which configuration resolves the issue?
A. R1(config)# ip sla 700
R1(config-track)# delay down 30 up 20
B. R1(config)# ip sla 700
R1(config-track)# delay down 20 up 30
C. R1(config)# track 700 ip sla 700
R1(config-track)# delay down 30 up 20
D. R1(config)# track 700 ip sla 700
R1(config-track)# delay down 20 up 30
