Why Did the Fujiwara Family of Heian Japan Choose to Entrust

Why did the Fujiwara family of Heian Japan choose to entrust responsibility for local government to their warriors, called "samurai"?

A) They did not have enough power to do it themselves.
B) They preferred aesthetic pursuits.
C) As Confucian gentlemen, it was below them.
D) They spent too much time learning Buddhism and praying.
E) They had no choice; the warriors were too powerful.