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:
A young boy is standing in front of a mound of sand and hitting the mound with his hands. The boy begins to stomp on the sand mound. the boy <sep> (A) continues to kick the puck back and forth while others are watching his game. (B) begins to try to climb the sand mound while people walk on the ocean front at the beach. (C) then sets down the stick and begins to clap his arms. (D) continues kicking the mound of sand until it sticks out.

Ex Output:
B


Ex Input:
A man named prvni kroky is on metal stilts outside and he begins, walking, jumping, running and moving and doing various movements while on his stilts and people around him are either sitting or walking doing their own thing. when the man <sep> (A) is done, the table is properly set. (B) stops jumping it has a black cage with a little trolley on the front, and he begins playing across the back with both items first removing the bars, turning the handle and then tightening the chain. (C) is done exercising and performing various moves and extensions for doing the extensions he begins to speak to the camera and such and a keyboard is shown up close. (D) is done demonstrating what he can do on the stilts he stops in his original spot to talk some more, waves and then runs off.

Ex Output:
D


Ex Input:
[header] How to align tracks in audacity [title] Open the audacity program. [step] You should see the main screen, with colored controls at the top and gray space for available tracks underneath. [title] Record your original track. <sep> (A) [step] Delete the itunes tracks and save the originals in a folder for the future. Double-click on the tracks that are in your pre-installed program. (B) [step] From the menu on the bottom panel, select " view all tracks " from the pop-up menu. Set the track (s) you wish to record as your mobile app. (C) [step] You can import from recorded tracks, import from a set, or purchase. [substeps] Select the track you want to record and click the plus sign to find the track. (D) [step] You will see the track populate with lines that represent sound modulation, directly under the controls. [substeps] Use your initial track as a marker for rhythm and timing.

Ex Output:

D