Forum:Unleash your Power! vs Light of Intervention

Light of Intervention prevents monsters from being set. It is already face-up on the feild Does this

A) Prevent you from activating Unleash Your Power! similar to how Imperial Iron Wall prevents Book of Life from activating.

or

B) Have no effect on Unleash Your Power! other than preventing the setting.

What would happen if I chain Light of Intervention to Unleash Your Power!?