An engineer is designing a campus network and must implement subsecond failover as it relates to OSPF and EIGRP designs. Which action accomplishes this requirement?

A.	Design a triangle topology and tune the timers on the routing protocol.
B.	Design a square topology and use port-channeling on each path.
C.	Design a square topology and tune the timers on the routing protocol.
D.	Design a triangle topology and use Bidirectional Forwarding Detection.