The Hold-Down Timer used in Distance Vector protocols:

A.
Sets the time limit of how long a router may keep a packet in its buffer, if the routing protocol is in the
process of converging

B.
Determines the number of seconds a router will wait before sending another update to neighbor routers

C.
Sets a specific period for routers to neither accept or advertise a route from a destination where an original route was recently lost

D.
Sets a duration where routes are not accepted from the neighbor router that caused a routing loop