How is the 19 inch PCIe Gen3 I/O Expansion Drawer connected on POWER8 systems?

How is the 19 inch PCIe Gen3 I/O Expansion Drawer connected on POWER8 systems?
A . PCIe Gen3 lnfiniband Adapter
B . GX++ Bus
C . Optical CXP Converter Adapter
D . PCiex8SR-IOV Adapter

View Answer

Answer: C