Radiant Charge damage on a critical hit

[Wolfiej]

Question on the Radiant Charge feat, on a critical hit as the lay on hands damage is extra (additional) damage rolled by dice it doesn't get multiplied as per the critical hit rules. Does the Cha bonus get multiplied by considering it to be technically flat damage or does it count as part of the additional damage dice?

i.e. If you crit with Radiant Charge, assuming there's no cha modifier and you have 4 lay on hand charges, it's (1d8+4) + (1d8+4) + 4d6 + 0.

If you have cha modifier of +4 as well, is the damage:
A. (1d8+4) + (1d8+4) + 4d6 + 4
B. (1d8+4) + (1d8+4) + 4d6 + 4 + 4

[Tyrant Lizard King]

A would be correct.

Your Cha bonus is to the bonus damage, which is divine damage so none of that would be multiplied.