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: Consider 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.

Output: A

Input: Consider Input: [header] How to stop payment on a lost check [title] Check your account statement. [step] Before you initiate a stop payment on the check, you need to make sure it has not yet gone through. If your bank has already accepted the check, a stop payment won't do you any good. <sep> (A) [substeps] If you are unable to get a stop payment from your bank, you may wish to consider trying one of several other banks. [title] Avoid checking checks after they've expired. (B) Other circumstances may warrant a stop payment, such as : [substeps] If you purchased a loan, you might want to deduct the balance. A stop payment will result in interest, which you then pay off. (C) [substeps] Typically it's easier to check your recent transactions on your online account, or on your banking mobile app if you have one. Make sure the check has not cleared, and also check your pending transactions to make sure it hasn't been presented yet. (D) If you believe it was lost, you can call the bank directly. [title] Confirm that you can't keep the check.

Output: C

Input: Consider Input: [header] How to identify wasps [title] Look for yellow and black. [step] Identify yellowjackets and european paper wasps by the yellow and black bands on the wasps' abdomens. Cicada killers are a type of digger wasp that resembles a larger, wider yellowjacket. <sep> (A) Identify the european hornet by its yellow and black striped tail and red-brown thorax. You'll also see black and yellow mud daubers. (B) They are very active wasps, so due to their relaxed sexation, wasps can only communicate to larger wasps and prey on small amounts of smaller wasps. [substeps] Cobra wasps, on the other hand, are horizontal wasps that resemble short, oddly shaped wasps. (C) Place a magnifying glass on the wasps' abdomens and pay attention to them as they fly overhead. [substeps] Wasps will often fly in pairs, especially if they are just looking for food. (D) [substeps] Wasps can be as large or as small as you'd like to have wasps. Brown wasps can be larger, but they may be less realistic.
Output: A