Q: 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 make sweet potato soup [title] Peel sweet potatoes and dice them to about an inch in size for faster cooking. [title] Peel and rough chop your onion. [title] Clean and cut up your celery to one inch pieces. <sep> (A) [title] Take one package of diced celery, quarter lengthwise in a bowl and place in the refrigerator overnight. [title] Drain the garlic and place it in a strainer. (B) [title] Mash your hummus in a saucepan over medium to high heat. [title] Place diced onion into the saucepan. (C) [title] In medium bowl, mix together butter, salt, garlic, sugar and water, leaving onion uncovered. [title] Mash all the ingredients together until a dough forms. (D) [title] Do the same for your fennel if you have decided you'd like to incorporate it for a slightly more gourmet taste. [step] Add water to about one inch over the vegetables.
A:
D