Replacement of a System of Per-Tonne Royalties with a Super

Replacement of a system of per-tonne royalties with a super profits tax would result in:

A) less industry output, more firms staying in the industry and more firms entering the industry.
B) more industry output, less firms staying in the industry and more firms entering the industry.
C) more industry output, more firms staying in the industry and more firms entering the industry.
D) less industry output, less firms staying in the industry and less firms entering the industry.