Definition: 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 cook bean sprouts [title] Buy the bean sprouts just before you want to cook them. [step] Wash your hands with soap and water first, then place the beans into a strainer or colander. Rinse the beans with filtered water, then gently shake them to remove any excess moisture. <sep> (A) [substeps] You can substitute whole bean sprouts for the white beans, but you'll have the crispiest bean sprouts if you use whole beans. [title] Place the beans on a soft towel to drain. (B) [substeps] If you have recently drained beans, they may resist rinsing. Just dump off most of the moisture, then grind them into smaller pieces. (C) [substeps] You can pinch off this wispy, brown thread at the end of the root if you want to, but this is not absolutely necessary. [title] Choose bean sprouts with a pale color and a crisp, firm texture. (D) [substeps] If you are worried about soaking the beans, you can soak them in separate liquid form for five to 10 minutes. [title] Soak the bean sprouts.
Output:
C