Refer to the exhibit.

You are asked to design this OSPF network to converge within 60 ms for unicast packets after a
topology change due to a single link failure. Which technology can be enabled while conforming to
the design requirements?

A.
Loop-Free Alternates

B.
BFD

C.
IGP neighbor timer tuning

D.
IGP SPF timer tuning

E.
RSVP-TE Fast Reroute