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 wear a graphic tee [title] Wear your tee under a jacket. [step] For a casual, yet tailored look, try wearing your tee underneath a blazer. The blazer should fit you well and have a certain amount of structure to it. <sep> (A) Try half-tucking your tee into your pants for a super cool, slouchy look. [title] Pair your tee with high-waisted shorts. (B) [title] Choose a graphic tee that matches the slimmest part of your body. [step] Vintage t-shirts and jerseys are the most common graphic tees. (C) Try on the blazer and pull it down at the waist to see whether it feels snug at the top. [substeps] A professional would be happy to accommodate your slimmer waistline. (D) If you are not feeling confident enough to wear your work shirt in a more casual way, then go ahead and throw the tee in the garbage. [substeps] Choose a solid colored tee for a more polished look, but if you can still slip it in without distortion, wear it under a gray top.

Ex Output:
A


Ex Input:
A boy with earphones is drumming and the stick got stuck in the instrument. The band is playing, while the man is singing, the drummer fell off the his chair. the marching band <sep> (A) unstuck their sticks, and the marching band started their song. (B) started to play and stop. (C) play their drums, then one of the drummers fell on the ground, a person came to help him. (D) is playing important instruments.

Ex Output:

C