Multi-select problem: How does the next paragraph end?

How to grow hydroponic mushrooms
Purchase a mushroom growing kit from your local gardening supply store.
Kits are blocks of compressed sawdust that have been saturated with mushroom seeds.
Immerse the mushroom block in a container of cold water.

Options are:
i. Let the mushroom build itself up into a gel-like cup. Place a handful of the sawdust into the bottom of the container..
ii. Leave it submerged for 10 to 30 minutes, or more if water is less readily available to strain the mushroom from the surrounding water. This will give your mushrooms a vigorous soaking to prevent oxidation..
iii. Make sure it is completely immersed; allow several inches of water to cover the top of the block. Allow the block to soak for several hours..
iv. Add 2 5 gallon buckets of tap water. Wash the mushroom block in room temperature water..
iii.