Given the task definition and input, reply with output. In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

[header] How to grow in a greenhouse [title] Choose small, adaptable plants for small greenhouses. [step] Basic, small greenhouses will not be able to support temperamental or larger plants. Pick basic plants that adapt well to a variety of environments for smaller greenhouses, particularly if you haven't grown plants in greenhouses before. <sep> (A) [substeps] Plants that do not retain heat well will be less suitable for smaller greenhouses. Trays and umbrellas are also not good for small greenhouses. (B) [title] Grow plants in smaller, more discreet holes or holes in the ground. [step] Small, hard-to-reach holes or holes are better for larger greenhouses because the roots of plants grow near the leaves. (C) [substeps] The minimum requirements are: no plants raised due to climate extremes (winter greenhouses often use these) and at least 80% humidity (205% during summer and higher during spring). [title] Choose full or partial shade to make the area warmer. (D) [substeps] Herbs, strawberries, tomatoes, cucumbers, and leafy greens all grow well in small greenhouses. [title] Plant large, more temperamental plants in larger greenhouses.
D