<< Self Defense >>

After receiving your grade on the first writing assignment, angered by your low grade,you print your paper, and come to campus to confront me.

(A) You findme walking down the hall, and with your paper rolled in a clinched fist over your head, you charge at me, screaming.I take out several throwing stars from my backpack, and calmly and deliberately throw them towards you, injuring you.

(B) The same example as above, except this time you come at me with an ax.

(C)In this example, the roles are reversed.You are walking down the hall, and see me coming at you unarmed.You know from taking me for class that I am a third degree black belt.You pull pull out a blow dart gun and shoot towards me.

In each example, as a defense to criminal liability, there is a claim self defense. Will each be successful?[Please explain fully]