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:
A young woman is smoking a bong. She exhales a lot of smoke. she <sep> (A) walks out of the room holding a clipboard. (B) moves her chest around to play the bongos while she's inhaling. (C) throws the smoke in the air. (D) smiles and the camera pans away.

Ex Output:
D

Ex Input:
[header] How to be a roller hockey goalie [title] Obtain all the right equipment-all the pads, the helmet, and everything else. [step] Don't try to play without it! [title] Stretch out thoroughly. [step] You should have some type of routine or comfort zone to get into the right mindset. <sep> (A) [title] Have your body on ice and ready to catch the puck (s) any pop off. [title] Lift your arms, but not too quickly. (B) If you just sat quietly for an hour waiting for the ice to harden (or something like it), you will feel tired soon after your session. Still, warming up and stretching will help your body acclimate to the cold one year ago, and you will gain muscle. (C) You'll probably find you need to stretch out much more than any of the other players. Join in the player stretch-out then move onto doing some personal stretches. (D) [title] Use a ice hockey rink and keep the doors open. [step] The best part about ice hockey is that you can roll around and skate along ice in any ice rink.

Ex Output:
C