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 break in your doc martens [title] Understand that a brand-new pair out of the box is going to hurt your feet like crazy. [step] This means that you should avoid wearing them for a long period of time for the first several wears. That means no walks or dances when they're fresh out of the box! [title] Buy the right fit. <sep> (A) [step] Always buy your doc martens one size larger so that you can wear them while still being able to walk. Otherwise your feet won't be able to handle them. (B) [step] This part can't be changed, so make sure that the retailer helps you to make the correct choice. [title] Take out the laces and rub dr. (C) [step] The best fit for your feet isn't just how comfortable they are, it's how they feel. In order to figure out a good fit, purchase the right shoes. (D) [step] Some brand-new doc martens are more expensive than others. Knowing exactly how to find the right fit is one of the keys to getting your feet perfectly fitted.
B