NYS IT-229 Real Property Tax Relief Credit - What is Penalties and interest paid on the residence?

I live in a co-op and qualify for the STAR credit already. Trying to see if I qualify for the new tax relief credit. Looking at Part 3 Schedule B I assume box B is the property taxes I pay by way of my maintenance fee? Is box C the sum total of mortgage interest I pay for my own mortgage as well as the co-ops underlying mortgage interest which is paid via my monthly maintenance?