Instructions: 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".
Input: [header] How to grow lettuce from an old lettuce stem [title] Cut off the end of the lettuce stalk. [step] Make sure you don't cut the stump too small. About 1-2 inches of leaf should be left. <sep> (A) Pull the cut stalk off and snip off any seeds. [title] Cut off the base portion of the plant at an angle. (B) [title] Place the stem in a small container of water that covers the roots. [step] Use approximately 1/2 inch of water. (C) Be aware that lettuce stems may grow back. [title] Cut the stalk to a width of 4 to 6 inches (10-13 cm). (D) Be sure to keep the stalk as intact as possible when trimming. [title] Cut the stalk to your desired thickness.
Output:
B