You will be given a definition of a task first, then some input of the task.
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 a substitute sanitary pad [title] Find a piece of cotton wool around the size of an average sanitary pad. [step] It doesn't matter if the shape or size is perfect. [title] Wrap your cotton wool with toilet paper. <sep> (A) [step] Be sure to use a non slip material. A sterile, absorbent toilet paper provides a good barrier. (B) [step] Fold it tightly, so the two sides are just touching, without any creases. Make sure no moisture (or water) has escaped. (C) [step] The cotton can be long or short. Just keep in mind that toilet paper must be long, and not too skinny because so many people use that. (D) [title] Place your substitute sanitary pad on the usual spot on your underwear. [title] Get a large amount of toilet paper.
Output:
D