Objective: how to strip a wire

Which of the following solutions is more sound in terms of naive physics reasoning?

Select from the following.
- bend the cord in a loop and lightly cut the outer edge of the loop. Once the insulation has been cut pull the outer insulation off the wires..
- bend the cord in a loop and lightly cut the outer edge of the loop. Once the insulation has been cut pull the outer tape towards the bottom of the wires..
bend the cord in a loop and lightly cut the outer edge of the loop. Once the insulation has been cut pull the outer insulation off the wires.