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 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 fruit crisp [title] Preheat your oven to 350 degrees f (175 degrees c). [title] Coat the bottom of a 9 x 12 baking dish with butter. [substeps] Use a stick of butter from the refrigerator to prevent clumps on the dish. <sep> (A) Fold the top two or three times so the butter is completely mixed in. [title] Place an inch of butter in each of the bottom four corners of the pan. (B) Use a butter knife to remove excess butter. Use a spatula to score small bumps on the surface of the dish by lightly tapping the butter over the area. (C) You will not need to use the entire stick, so only expose 1 end of the butter. [title] Make fruit crisp using a variety of fruits. (D) [title] Wash two large fruit pistachios in warm water. [title] Mash them with a fork or another food processor until they are smooth.

Ex Output:
C


Ex Input:
[header] How to open 7z files [title] Locate izip in the app store or play store. [step] A 7z file is a compressed archive of one or more files. To access the files inside the archive, you'll need an app that can extract them. <sep> (A) Izip is recommended across the web for being able to handle this particular file type for free. [title] Tap " get " or " install ". (B) [substeps] To find the app, tap the app icon on your home screen or app drawer. The app logo looks like a magnifying glass. (C) To open a 7z file, search for " e7z files " in the app store and tap the app. [title] Extract the file you want to extract. (D) For example, you can download the izip app on android. [substeps] You'll need to pay a fee to download file, usually 250 mb.

Ex Output:

A


