单项选择题

If we fight a war and win it with H-bombs, what history will remember is not the ideals we were fighting for but the______we used to accomplish them, which will be ______the warfare of Genghis Khan, who ruthlessly killed every last inhabitant of Persia.

A. reasons … oblivious to
B. methods … compared to
C. passions … contrasted with
D. weapons… incommensurate with
E. politics … minor to