What is the expected outcome if the administrator attempts to disable the iSCSI HBA in the vSphere client?

A vSphere 5.x environment has an ESXi 5.x host configured to boot from a hardware independent iSCSI adapter.

What is the expected outcome if the administrator attempts to disable the iSCSI HBA in the vSphere client?

A.
The adapter will be disabled, but is re-enabled the next time the host boots up.

B.
The adapter will be disabled and the host will not boot the next time the host boots up.

C.
A hardware independent iSCSI adapter cannot be disabled from the vSphere Client.

D.
The adapter will be enabled, but the host will boot into troubleshooting mode the next time the host boots up.