If the Threatened Use of Nuclear Weapons in War Is

If the threatened use of nuclear weapons in war is credible,what effect does this have for the bargaining model of war in a conflict between a nuclear state and a non-nuclear state?

A) It increases the potential benefits for a nuclear state.
B) It increases the potential benefits for a non-nuclear state.
C) It increases the potential costs for a nuclear state.
D) It increases the potential costs for a non-nuclear state.
E) It expands the bargaining range for both parties.