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". 

Example Input: [header] How to travel abroad [title] Do your research. [step] You need to research where you are going, the flight times and prices for airlines, and which documents you need to take with you. Plan out your itinerary carefully. <sep> (A) Some cities, like london or paris, really need a week to see what they have to offer. Travel times also need to be taken into consideration. (B) For example, visit a couple of websites of airlines to see what type of itinerary they offer. Pay attention to the price, name, phone number and/or mailing address of each airline. (C) This will help ensure that all of your research enables you to see where you want to go. [substeps] Do research on an airline's website, and see what seat guides they offer on planes and what websites they provide online. (D) [title] Decide whether you will be flying from 1 area or from another. [step] International flights should likely be just a teaser.
Example Output: A

Example Input: [header] How to make two different size breasts appear the same [title] Pull your hair over the shoulder of the smaller breast. [step] If you have long hair, use it to your advantage by sweeping it over the shoulder of the smaller breast. Doing so will visually " pad " the smaller breast, balancing them out and making them appear to be the same size. <sep> (A) [title] Wear an asymmetrical top. [step] Asymmetry is a perfect tactic you can use to combat unevenness. (B) [substeps] Pull the hair up and over the one smallest breast to cover the smaller one. If your struggling to get the hair covering that little breast covered, either use a fake hair scrunchie or duct tape to get rid of the extra excess hair. (C) [title] Clip the section of your hair that isn't showing as much into a ponytail. [step] You want your ponytail to go up most of the way to the crown of your head. (D) [substeps] Tuck the small breast under the large one. Pull it under one arm and vice versa.
Example Output: A

Example Input: [header] How to deal with an unresponsive friend when you attempt to rekindle a friendship [title] Reach out via letter, email, or text. [step] While heart-to-heart conversations can work, which one you choose depends on what style you prefer, how long you want your message to be, and what contact information you have. [substeps] Consider writing a draft of your message, and sleeping on it, before sending it. <sep> (A) Sending a draft can make your friend say something along the lines of, " i'm really excited to get closer to you. I was just wishing you well this weekend. (B) There are plenty of forums online that can work. Many other web pages offer as much information as free forums. (C) [title] Apologize for your part in what went wrong, if anything did. [step] Be honest, and admit your own fault, whatever it was. (D) Make sure to leave your contact information on each letter. You can print it off yourself and use a notecard and sign it elsewhere.
Example Output:
C