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 pick a healthy sugar glider [title] Find a breeder. [step] If you want a sugar glider, your best option is to find a breeder. Breeders work specifically with sugar gliders and will have more knowledge about how to care for them, therefore increasing the risk of you obtaining a healthy pet. <sep> (A) [substeps] When visiting a breeder, look at their food and water dishes regularly. Good breeders will tell you how often and provide you with other food and water containers. (B) [substeps] Ask other breeders at local pet stores about their experience handling sugar gliders. If you want a sugar glider in your home, you'll want to make sure they have a dry skin. (C) [substeps] Finding a sugar glider breeder can be difficult. It's not as easy as finding a breeder for a particular kind of dog as there are few specific networks for breeding sugar gliders. (D) [substeps] If you will have a sugar glider in your home, breed it from their own genetics and pedigree, not the other way around. Don't get a sugar glider that has a steady and well-structured life.

Ex Output:
C

Ex Input:
[header] How to pay sallie mae with a credit card [title] Navigate to sallie mae's website at https: // www.salliemae.com/credit-cards/sallie-mae-card /. [title] Click on " apply now. [step] You will be redirected to an online application website operated by barclaycard. <sep> (A) Select your credit card location from the drop-down menu and click " apply. " [substeps] If the popup page pops up, simply click " apply to card. (B) [title] Fill out the registration form to form sallie mae. [step] The form asks to enter your personal information including : [substeps] Full name address birthdate birth and date of birth first and last name address of any insurance or social security number. (C) [title] Fill out all required fields on the form to apply for a sallie mae mastercard. [step] You will be required to provide your name, address, employment and financial information, security information, and more. (D) The applications are not available on illinois's website. [title] Click on " application for sallie mae " from the menu option on the front of the application page.

Ex Output:
C