Which SolVe procedures are customer viewable and can be found in the Upgrade section?

Which SolVe procedures are customer viewable and can be found in the Upgrade section?
A . Software Upgrade
Stretched Cluster Upgrade
SRS Upgrade
B . Firmware Upgrade
Hardware Upgrade/Expansion
Software Upgrade
C . Hardware Upgrade/Expansion
SRS Upgrade
Witness Host Upgrade
D . Firmware Upgrade
iDRAC Upgrade
vCenter Upgrade

Answer: A