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

How to grow a pencil tree (euphorbia tirucalli )
Check the roots.
When buying any potted plant from a nursery or garden center, gently life the plant out of the container and look at the roots. The plant should have these characteristics :
A firm but not compacted root ball.

Available options:
A). The roots should be near the top of the container. The roots should move inward toward the center.
B). A rigid, velvety bark that is not flavorful. Determine the plant's ph level.
C). White roots that do not show any signs of rot. A dense cluster of roots that hold the soil.
D). Soft and squishy to the touch. Know what type of stem you need.
C).