Which condition must be satisfied before a Cisco router running RIP can poison a route?
A. The invalid timer must expire.
B. The hold down timer must expire.
C. The flush timer must expire.
D. The flush timer must reach 240 seconds.
E. The metric must equal 16.
E
Answer is A, after the invalid timer expires the route has it metric set to 16. So whilst the action is E, the condition that must be met is A