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".
Q: [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.
A:
C