Which step can be used to back up the host before the upgrade is performed?

An administrator is performing an upgrade on an ESXi host. Which step can be used to back up the host before the upgrade is performed?

A.
Use the ESXi direct console and select the Host Backup option.

B.
Use vCLI and run vicfg-cfgbackup -s backupfile to save the ESXi host configuration.

C.
Login to the ESXi host directly and run esxcfg-backup file to save the ESXi host configuration.

D.
Using the vSphere Client, attach to the ESXi host and select the Backup option from the Configuration tab

Explanation:

I can use option B and C, but with option C when I run the file is save local in ESX, when I run using powerCLI the file is save in my PC.

Page 23 on vsphere-esxi-vcenter-server-50-command-line-interface-solutions-and-examples-guide.pdf

Backing Up Configuration Data
You can backup configurationdata byrunningvicfg-cfgbackupwiththe -soption.
vicfg-cfgbackup <conn_options> -s /tmp/ESXi_181842_backup.txt