Why Would a State Go to War to Change Another

Multiple Choice

Why would a state go to war to change another state's regime?

A) International law allows states to attack another state whose government makes threats against its neighbors.
B) War is the only way that democratic states can change authoritarian regimes into representative governments.
C) States will use war,when possible,to remove a regime in another country that is hostile to it.
D) A state would change a regime that refuses to trade with other states.