In reference to BGP route flap dampening feature, when will the penalty and the flap history of a route clear?

A.
When the penalty associated with a route reaches the reuse limit.

B.
When a route is in the history state for longer than the half-time limit.

C.
When the penalty associated with a route reaches the suppress limit.

D.
When a route in the suppressed state for longer then the half-time limit.

E.
When the penalty associated with a route drops below half the reuse limit.

Explanation:

A router stops tracking penalty points once they are below half of the reuse limit. After enabling RFD, the router never rmoves a route from the BGP table. A route that has been withdrawn by a BGP neighbor can still be seen in the BGP table marked with “h” (history state. The penalty is always applied to a path and not a prefix. If one of the paths is flapping, it does not mean that the destination is flapping. Reference: Configuring BGP on Cisco routers p. 7-120