A team of network engineers is using an interior gateway routing protocol that takes into consideration only the number of hops when calculating routes.

What would you recommend as an interior gateway routing protocol that calculates routes using a metric weighted on lowest bandwidth cost combined with delay time, and that only sends updates to neighbors when the topology has changed?

Border Gateway Protocol $($BGP$)$

Routing Information Protocol $($RIP$)$

Open Shortest Path First $($OSPF$)$

Enhanced IGRP $($EIGRP$)$