Hep B vaccination is essential, as once the virus start growing in the body (blood), there is still not known treatment that can 100% eliminate all of them.. U will be carrying the virus lifelong.

Hep A is optional, It do cause hepatitis, however it's OFTEN self-limited and mild, as the virus won't persist in the blood, instead it will be passed out in stool later.

And, Hep A Jab is expensive =x