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". 

Ex Input:
[header] How to find a penpal [title] Think about what you want to send. [step] There are many different ways to correspond with a penpal, and deciding on the one that's right for you makes it easier to sort through the number of penpal websites on the internet. Some people prefer communicating electronically while others like to use penpals as a means of creative communication. <sep> (A) [substeps] The international union of mail-artists is a website dedicated to those who like sending postal art to their penpals. Iumoa is a much more niche community as it has roughly 4 , 000 active members. (B) Read the different penpal websites carefully and decide on the one you wish to write a message for. [title] Enter the number and contact information you would like to use in the address bar (in the upper right hand corner of the web page). (C) [substeps] Remember that there is no set password to choose from across a thousands of websites, but feel free to use whatever feels most comfortable for you. [title] Narrow the search criteria to near the lowest classifications. (D) Some people like to send messages on social media or email, while other people prefer to send text messages or instant messages. [title] Decide which websites you want to find.

Ex Output:
A


Ex Input:
[header] How to ride the toronto subway [title] Use the ttc trip planner. [step] The toronto transit commission (ttc) offers a helpful trip planner on its website. Simply enter your starting point and destination into the appropriate fields, then set your departure or arrival time. <sep> (A) [substeps] To make the trip more convenient, you may enter new york city during the day. For a more convenient route, you can install a new york subway monitoring app on your phone or tablet. (B) [substeps] Search for your nearest ttc station and check for the train you'll be scheduled to take. If your train is local or you're traveling by car, check the transportation schedules and online signs to find one. (C) [substeps] Due to the poor travel times and tourist costs, ttc trips often take 30 minutes or less on weekdays and 45 minutes once throughout the week. Ttc only prolongs this travel time in the 21st century. (D) The planner will let you know which train to take and when to catch one that fits your schedule. [substeps] You can find the trip planner here: http: // ttc.ca/trip _ planner/index.

Ex Output:
D


Ex Input:
[header] How to make money with amazon affiliate program [title] Begin an online effort. [step] The best amazon affiliates are bloggers or websites that add links to amazon along with quality content on their own site. Consider starting one of the following online sites : [substeps] Start a free online blog using blogger, wordpress or a similar site. <sep> (A) Since you start these blogs for free, the cost is only the time you spend designing and adding content. Choose something on which you are passionate so that you can add interesting content and develop followers. (B) Make sure the proper url and formatting is accurate. Create a post that you can share to amazon. (C) Try linking to other sites on the same platform that are not affiliate based. Get on social media networks like facebook or twitter from amazon. (D) Hit the " sign in " button and sign in with your gmail account or your facebook credentials. This is perhaps the most effective way to earn money from amazon affiliates on your own.

Ex Output:

A