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". 

Example Input: [header] How to visit the top 10 tourist destinations in london [title] If you are planning to visit london why not try visiting the following must-see places? [title] Visit the british museum at great russell street. The british museum's art collection includes artworks from all over the world. [step] The british museum houses the rosetta stone, sculptures from parthenon, and the portland vase. <sep> (A) Visit art galleries, amazing places, and places which you have never been. [substeps] Do not forget to ask for drivers from the london lights station, trinity quarter , 121 lights avenue-this is the only modern route to london. (B) The british museum is considered as one of the best in the world and it was established in 1753 via the act of parliament. The first collections were from sir hans sloane. (C) They are also accessible by either gps or facebook. [substeps] If you are going to the london museum, press the' get started' button. (D) Occasionally you may see art museums in london that serve as places to observe british history-like the australian museum. [title] Then take the ferry from oxford to mcdonald's, the capital city of london.
Example Output: B

Example Input: [header] How to stay calm during road rage [title] Recognize your rising anger. [step] The most obvious signs of anger are often physical symptoms that emerge after the fact (like voice tone, language, and gestures). But with practice, you'll learn to recognize the warning signs of anger when you mentally check in on yourself. <sep> (A) When you're angry, you'll recognize them as part of your subconsciously hunting instincts. [substeps] Common signs of anger include: a car slamming on its brakes or a fire ensuing, which should be quickly and unequivocally obvious. (B) Your body is responding to these moods : [substeps] Your heart rate increases or drops. Your heart is racing, your breaths are rapid, and you're sweating. (C) [substeps] Most of your response time should be repetitions of the actions or sentences that trigger your anger. Often, this response is triggered by one or more things that remind you to be relaxed, both positive and negative. (D) [substeps] Common signs of anger include angry/vengeful thoughts, muscle tension, headaches, or elevated heart rate. If you catch yourself speaking out loud (even when you're driving alone) about another driver, you may be experiencing elevated anger.
Example Output: D

Example Input: [header] How to use the shazam for iphone app [title] Download, install and open the shazam app from the apple appstore. [title] Listen to a piece of music, as you press the spinning s icon from the page that results. [step] The app will locate the song with the same melody and words as they occur from the database of songs. <sep> (A) Since shazam can be hard to understand, you may choose to use the music gallery app from the login screen. [title] Install and install shazam from the music gallery app on your iphone. (B) [title] Listen to a live video file or podcast. [step] Playlists that come from live video files or podcasts are easy to find. (C) [substeps] Use the auto shazam feature switch on the front page of the app to automatically trigger any and all music to automatically locate the name of all played music. [title] Read the shazam track info's profile page if it found the song. (D) If you have an iphone, note that you cannot just find songs in a different database with the same melody. You have to find songs that rhyme with each other.
Example Output:
C