In a Case the Accused Who Was a Widower Led

In a case the accused who was a widower led a homely life with his 12-year-old son, nephew and unmarried daughter. The accused suffered from no insanity. One day the accused accompanied by his son went with an axe in his hand to woods to gather siadi leaves. Sometimes after his nephew who had been working in the field discovered the accused sleeping under a tree with the blood stained axe beside him. There was no trace of the son of the accused. Later his son was found hacked to death. It transpired in evidence that the accused for the time being was seized of a state of mind in which he visualised that a tiger was going to pounce on him and as such mistaking his son as the tiger he cut him into pieces.

A) the accused is lying and is guilty of culpable homicide
B) it was mistake and the accused had no intention of causing the death of his son whom he dearly loved.
C) the accused is not his sound frame of mind
D) none of them