Matteo is analyzing the load balancing to his company's servers that handle their online sales. He finds that one of the servers is running slow, but several others are running far below capacity. What should he do to address this problem? a. Adjust the weighting of the traffic that is assigned to the servers. b. Enable persistence in the load balancer. c. Check to see if the load balancer has an unreachable frontend. d. Check the headers on the incoming traffic.