Which of the Following Describes a Commitment Problem

Multiple Choice

Which of the following describes a commitment problem?

A) A state cannot be trusted to abide by a deal it made when it was much weaker.
B) A state refuses to commit to signing a cease-fire.
C) Two states are uncertain about the capabilities of their adversaries.
D) A state is unsure of its adversary's willingness to go to war over a disputed good.