What does this command show?

An administrator is upgrading an ESXi host from 5.5 to 6.0 and runs the following command:
esxcli software vib list –rebooting-image
What does this command show?

A.
VIBs active after a reboot.

B.
VIBs that require a reboot.

C.
VIBs that are in the boot image.

D.
VIBs that are third-party.