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 start a good conversation [title] Make the person feel like you care. [step] You can turn a total stranger into a friend just by making him feel like you care about what he has to say and that his opinion matters to you. If the person thinks you're talking just to hear your own voice, he'll be turned off immediately. <sep> (A) Make sure to be yourself as well--it's important that you show the person your worth. [title] Make sure you're a good listener. (B) Just making the person feel like you really care about him will make him forget his feelings and will also show him you don't care what other people think about him. [substeps] Make it known that you do care about him without ever saying so. (C) Instead, turn your body and focus toward that person and maintain eye contact without being too intense. Give the person enough personal space, but show that the person has your attention. (D) Keeping your voice soft and sincere will instantly make the person feel at ease and thus more willing to start a conversation. [substeps] Remember that just because someone has said something nice to you, it's a verbal invitation, not a direct action.
Example Output: C

Example Input: [header] How to host web sites [title] Get a static ip address. [step] This is connected to your isp (internet service provider), and you will probably need to upgrade your internet plan to be permitted to host a website. [title] Secure a fast 24/7 internet connection. <sep> (A) [step] Navigating to where the internet is, establishing a encrypted connection, and accessing an advanced web browser, will sometimes seem very daunting. However, if the website is a fake, you should simply secure a simple connection that can be manipulated in real time. (B) [step] Multiple connections are best; otherwise your website will be down whenever there's an interruption in your internet connection. [title] Find a stable system for your computer. (C) [step] Vls5 is another option that might save you some trouble choosing one if you're looking for a good host. [substeps] A quick internet browser will usually work fine in a remote server. (D) [step] Easy access to your internet server is via an ethernet cable. Internet hotspots always have a built in router to use, and you may need to turn your router on or off, depending on the router.
Example Output:
B