What happens next in this paragraph?

How to plant napier grass
Cut a mature stem of napier grass.
If napier grass does not grow wild in your area, you may be able to buy some from a plant nursery or catalogue. Cut the stem around 15-20 cm (6-8 inches) above the soil.
Pick your answer from:
[a]. These steps are only if you're going to plant napier grass organically. Napier grass needs a cool climate in order to thrive.
[b]. Look for stems that have at least three nodes, which are small bumps that will eventually grow into new leaves. Cut the stem into sections with three nodes each.
[c]. This will help prevent root rot as you plant. If the shoots on a young tree are not growth-bearing, you may simply cut it off with a pair of scissors.
[d]. Often, you can obtain napier grass online or from a garden center, though note that a garden center cannot order the grass from you. Cut the stem of the grass to the size indicated on the package.
[b].