Detailed 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".
Problem:[header] How to unclog a drain with salt and vinegar [title] Mix salt and vinegar. [step] In a small bowl, pour 1 cup of salt. Add 1 cup of vinegar. <sep> (A) Place 1 cup of distilled white vinegar in a small bowl. The salt and vinegar will help the solution penetrate the clogged drain. (B) Stir well so the salt soaks up all the vinegar. Continue stirring until the mixture is smooth and even. (C) Mix the salt in, going slowly but bringing the mixture to a boil. Always stir the solution well, making sure nothing gets broken. (D) If possible, give it an extra stir. The vinegar will set the clog, and it will give it a smoother initial scrubbing.
Solution:
B