Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to prune houseplants [title] Use sharp scissors or garden shears. [step] Make sure the scissors or garden shears are very sharp, as dull shears can damage the plants. If you notice any dirt on the shears, soak them in water with a teaspoon of bleach and then wipe them dry.

Ending1: [title] Determine how many cuttings you wish to create. [step] Many houseplants are grown in zones c and 7. Ending2: A clean tool will ensure your plants are not exposed to bacteria or pests when you prune them. [substeps] You can find garden shears for pruning online or at your local hardware store. Ending3: [substeps] Plastic surgeon-grade gardening scissors are not recommended for untrained gardeners. [title] Trim away diseased or misshapen plants. Ending4: [substeps] If you see a pop of rust on the blades after cleaning them, then the tools may be too dull or abrasive to use. Do not use sandpaper on the blades when pruning your houseplants.

Answer format: ending1/ending2/ending3/ending4