The Hittite Empire Was Able to Survive Even Attacks by Rivals

The Hittite Empire was able to survive even attacks by rivals because:

A) the Hittites were strongly militaristic to the exclusion of all other aspects of governance and diplomacy.
B) its leaders made an alliance with their rivals, the Mitannians.
C) the Hittite government made good use of espionage and assassination to defeat its rivals.
D) their military readily adopted new technologies, even those of their enemies.
E) the Hittites adopted the culture of those attacking them.