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 make a simple atlatl [title] Find a straight branch with a hook shape on the end of it. [step] The main branch should be the length of the user's forearm and hand. The end with the small hook will be where the spear attaches to. <sep> (A) The handle is used to hold the spear in place. [title] Mark down where you will build your atlatl. (B) [title] Cut the hook shape down to be about one inch long and one quarter inch wide. [title] Now you can sand down, add a handle, decorate, or apply laquer and paint. (C) The top is where the spear attaches. [title] Balance the branch on your bent knee. (D) [substeps] Alternatively, look at your user's wrist in order to find a branch with an opposite length. If you can't find a branch with two sides, try playing around with other shapes.
Output:
B