Which option correctly defines data center bridging?

a set of standards that are designed to replace the current Ethernet and IP protocol stack with a goal of enhancing the current transmissions for delay$-$sensitive applications

a set of standards that are designed to transparently enhance Ethernet and IP traffic and provide special treatment and features for certain traffic types such as FCoE and HPC

an emerging LAN standard for future delay$-$sensitive device communication

a single new protocol to replace the Ethernet standard that is compatible with Ethernet hardware