Teacher: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".
Teacher: Now, understand the problem? Solve this instance: [header] How to grow kumquat [title] Wrap kumquat seeds in a damp paper towel. [step] Soak the paper towel in tap water and wring it out. Spread the seeds across one half of the paper towel so they aren't touching and so they are evenly spaced from one another. <sep> (A) [substeps] Squeeze the excess water out of the seeds. Spread a layer of sterile vermiculite over both seeds and let them water for about 2 hours. (B) Fold the paper towel so the seeds are covered. [substeps] The more seeds you place in the bag, the more opportunities there are for them to germinate and start growing. (C) Let the seeds form a loose, pliable bundle. [substeps] Make sure the paper towel is non-transparent to you, otherwise you might damage the seedlings. (D) Keep them to 1 inch (2.5 cm) apart from each other. [substeps] You will add air to each seed to create air pockets in the germination bundle.
Student:
B