What is the command to upgrade a SecurePlatform NG with Application Intelligence (Al) R55 SmartCenter Server to VPN-1 NGX using a CD?

What is the command to upgrade a SecurePlatform NG with Application Intelligence (Al) R55
SmartCenter Server to VPN-1 NGX using a CD?

A.
cd patch add

B.
fwm upgrade_tool

C.
cppkg add

D.
patch add

E.
patch add cd

Explanation: