Intensified Battering Blast Damage?

[1bent1]

Hi folks,
Quick question the spell Batering Blast combinded with the meta magic feat Intensified Spellwould have what damage max?

Would it be at cl 20 be:

a)10d6 per sphere of spikes with 4 spheres.

b)10d6 on the first sphere of spikes and 5d6 on the remaining 3 shperes.

c) something else?

[ProfPotts]

a)

[meowstef]

looking at both I would say that all 4 would do 7 d6 damage

intensify increases the max damage by 5 levels rather than 5 dice so that would grant a 2 dice increase

there is nothing in intensify to imply it would only effect one part of the spell, so all get that increase