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 first aid kit for camping [title] Make a decision about size. [step] The size of a first aid kit depends on how it is being used, and how many people will use it. In general, if your fist aid is coming with you on a camping excursion it should be big enough to stock adequate supplies for everyone in attendance but also lightweight and portable. <sep> (A) Generally speaking, a 6 inch (15 cm) kit should still fit enough to cover six people. [substeps] Ideally , 6 inch (11 cm) kit should be adult adult kit but larger kits are usually considered more durable and more comfortable. (B) Larger kits usually come with a full-size gift box that will carry the kit, so buying a good one will be the most cost-effective thing to do. [title] Determine how long to buy the kit. (C) [substeps] There are two main sizes of first aid kits: pocket first aid kit, and box first aid kit. Pocket first aid kits are harder to use and are less durable. (D) [substeps] If you're backpacking alone or with one or two other people, keep it on the smaller side as the less items in your backpack the better. Added weight can cause back strain and fatigue that can interfere with your journey.
Output:
D