What are two reasons why you tune some of the Pega out-of-the-box default agents in a production environment?

What are two reasons why you tune some of the Pega out-of-the-box default agents in a production environment?
A . The agent should not run in production.
B . The agent is preconfigured to run at an optimal time by default.
C . The agent runs more frequently than needed.
D . The agent runs based on node classification.

Answer: AC