Should I turn on CVV/CVC verification and AVS verification? (Fraud protection)

Hi. I was going through my payment settings, and saw the image below:

(I’m sorry it’s in Dutch, but it’s about fraud prevention when paying with a credit card).
I think it was like this by default (so: reject when CVV/CVC verification fails, but the one about AVS not rejected when fails).

Can I leave it like this? Or is it really important to check both?

Thanks!