Finish the following sentence with the best choice: How can I create my own potting soil mix?

Choices:
- To make your own potting soil, mix 3 parts old soil, 1 part vermiculite, 1 part ring worm compost and a few scoops of fertilizer.
- To make your own potting soil, mix 3 parts old soil, 1 part vermiculite, 1 part worm compost and a few scoops of fertilizer.

Answer:
To make your own potting soil, mix 3 parts old soil, 1 part vermiculite, 1 part worm compost and a few scoops of fertilizer.