<human>: Here is a goal: How do I sharpen a knife.

Which way makes more sense to accomplish this goal?

OPTIONS:
- Place the knife at a 90 degree angle to your sharpener and quickly pull it across the sharpener on one side, then the other. Repeat this several times.
- Place the knife at a 45 degree angle to your sharpener and quickly pull it across the sharpener on one side, then the other. Repeat this several times.
<bot>: Place the knife at a 45 degree angle to your sharpener and quickly pull it across the sharpener on one side, then the other. Repeat this several times.