For a good cut of the edge ,The wood chisel ,who is cutting edge, the angle must be always less than 90°.
→ When angle between Axe and the point of contact on the edge is less than 90 degrees it will take less time to cut the edge.
→ When angle is small, the pressure on Wood chisel's body will be more , which will make him tired and take longer time to cut the edge at the point from where he or she wants to cut the edge.
So, for a perfect cut angle should be between the limits:
45< Angle < 90.
From my point of Correct option should be (D) 60°.
