Provide Very Wide Coverage for All Products and Protocols, with Noticeable

Provide very wide coverage for all products and protocols, with noticeable performance impact. How could you tune the profile in order to lower the CPU load still maintaining security at good level?

A) Set High Confidence to Low and Low Confidence to Inactive.
B) Set the Performance Impact to Medium or lower.
C) The problem is not with the Threat Prevention Profile. Consider adding more memory to the appliance.
D) Set the Performance Impact to Very Low Confidence to Prevent.