If you already have Core XL enabled, how are you able to increase Kernel instances?

Due to some recent performance issues, you are asked to add additional processors to your firewall.

If you already have Core XL enabled, how are you able to increase Kernel instances?
A . Once Core XL is installed you cannot enable additional Kernel instances without reinstalling R76.
B . In Smart Update, right-click on Firewall Object and choose Add Kernel Instances.
C . Use cpconfig to reconfigure Core X
E . Kernel instances are automatically added after process installed and no additional configuration is needed.

Answer: C