In Xanathar's Guide to Everything, there is a racial feat called [Orcish Fury] on page 75 that reads:
When you hit with an attack using a simple or martial weapon, you can roll one of the weapon’s damage dice an additional time and add it as extra damage of the weapon’s damage type.
Is this extra damage die affected by critical hits? Because I can see two interpretations of this feat.
Assuming a Greataxe critical hit:
A.) 1d12[base] + 1d12[crit] + 1d12[Orcish Fury]
B.) 2d12[base + Orcish Fury] + 2d12[crit]
Which of these calculations is correct for the damage on a crit?