What is the difference between these two commands?

Your customer asks you about the Performance Pack. You explain to him that a Performance Pack is a software acceleration product which improves the performance of the Security Gateway.

You may enable or disable this acceleration by either:

1) the command: cpconfig

2) the command .fwaccel on off

What is the difference between these two commands?
A . The fwaccel command determines the default setting. The command cpconfig can dynamically change the setting, but after the reboot it reverts to the default setting.
B . Both commands function identically.
C . The command cpconfig works on the Security Platform only. The command fwaccel can be used on all platforms.
D . The cpconfig command enables acceleration. The command fwaccel can dynamically change the setting, but after the reboot it reverts to the default setting.

Answer: D