What can the engineer do to prevent this service-affecting re-convergence only in the case of momentary link bounces until the link can be repaired?

Users are complaining of intermittent high packet loss for seconds at a time. The engineer troubleshooting the issue finds that a link is bouncing for millisecond at a time, causing the traffic path to re-converge onto a congested FastEthernet link.

What can the engineer do to prevent this service-affecting re-convergence only in the case of momentary link bounces until the link can be repaired?
A . Increase the Value of the carrier-delay down.
B . Disable keepalives and BF
D . Decrease the value of the carrier-delay up.
E . Decrease the value of the carrier-delay down.
F . Increase the value of the carrier-delay up.

Answer: A