Write the next sentence in the following story.

How to cultivate bamboo
Decide on a type of bamboo.
While it isn't necessary to research each of the 1200-plus varieties of bamboo, deciding on clumping or running bamboo should be the first step in cultivating bamboo. Clumping bamboo will work best for container gardens or small areas.

Options are: 1). When planting bamboo on an elevated platform, work in rows to make rows as thick as possible. Running bamboo should be divided into 4x8 feet (5.1 m) in size, while running bamboo should be divided into radial rows.; 2). Although bamboo plings are usually grown in pots and leaves, they are not as common and require some consideration. Potting potting mixes help the plants to cook and nourish without having to be crushed.; 3). Run bamboo plants tend to grow larger in a garden, with particular types of plants being surrounding them. Running bamboo has thick leaves, however, making the roots much thinner than wood or wooden.; 4). Running bamboo works best when it's intended to fill in a large area of a landscape or needed to create a natural fence between properties. Consult local garden centers for information about the different varieties of bamboo available.;. The answer should be
4).