Which feature must be configured for Linux VMs to be able to transition from Cisco VM-FEX standard mode to universal passthrough mode?

Which feature must be configured for Linux VMs to be able to transition from Cisco VM-FEX
standard mode to universal passthrough mode?

A.
RSS

B.
MSI Interrupt Mode

C.
VEMDPA Agent

D.
Execute Disabled Bit

F.
Processor C State