Here is a goal: How do I sharpen a pencil without a pencil sharpener?

How would you accomplish this goal?

Pick from: A). Take a small knife and press against the tip and stroke off tiny pieces of the pencil tip, until you expose the lead/ graphite and can write with it.. B). Take a small scissors and press against the tip and stroke off tiny pieces of the pencil tip, until you expose the lead/ graphite and can write with it..
A).