Which of the Following Best Describes Clausewitz's Concept of 'The

Which of the following best describes Clausewitz's concept of 'the rational calculus of war'?

A) A state should only embark upon war under absolutely optimal conditions.
B) When they start a war, leaders believe that they are making a rational decision, but war is inherently irrational.
C) There should be a relationship between the value that a state attaches to the ends it seeks to obtain in warfare and the means which it uses to achieve those ends.
D) All of the options given are correct.