When will the penalty and the flap history of a route clear?

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.