Which Unity expansion module is recommended?

A customer has an OLTP application running on a host accessing Dell EMC Unity Block storage. The application performance is experiencing CPU bottlenecks caused by iSCSI workloads. As a result, you are recommending the addition of an expansion module with an iSCSI Offload engine to the Unity system.

Which Unity expansion module is recommended?
A . 2-port 10 GB/s iSCSI module with SFP
B . 4-port 1 GB/s GbaseT module RJ45
C . 4-port 10 GB/s iSCSI module with SFP
D . 4-port 10 GB/s GbaseT module RJ45

Answer: A