Designing Cisco Network Service Architectures (ARCH) (#174)

A company is running BGP on the edge with multiple service providers in a primary and secondary role. The company wants to speed up convergence time if a failure were to occur with the primary, but they are concerned about router resources. Which method best achieves this goal?

Utilize BFD and lower BGP hello interval.
Utilize BFD and keep the default BGP timers.
Utilize BFD and tune the multiplier to 50.
Decrease the BGP keepalive timer.