When a floating static route is configured, which action ensures that the backup route is used when the primary route fails? 

Answer options:

A. The administrative distance must be higher on the primary route so that the backup route becomes secondary.
B. The default-information originate command must be configured for the route to be installed into the routing table.
C. The floating static route must have a lower administrative distance than the primary route so it is used as a backup.
D. The floating static route must have a higher administrative distance than the primary route so it is used as a backup

D