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 perform an autopsy on a human being [title] Understand what an autopsy is. [step] An autopsy is a detailed examination (and dissection) of a human body after death. It is used to determine the likely time and cause of death, as well as to evaluate the presence of disease and/or injuries. <sep> (A) An autopsy is often performed during the day after a death, or at night. Depending on your body type, an autopsy can last longer or shorter if done with the right equipment. (B) The autopsy is often conducted as a procedure administered in an office, rather than a surgical procedure, but it is treated in multiple ways. [substeps] For a crime scene autopsy, the job is to put the human body's dna on a piece of paper and then render it to a laboratory for analysis. (C) [substeps] An autopsy is conducted by a pathologist, which is a doctor with specialty level training in how to do the procedure and how to effectively analyze the tissues and body fluids. If the person's death is being investigated forensically, an autopsy may be legally mandated. (D) A typical autopsy takes place approximately 50 minutes after the death of the patient. The procedure consists of the following components : [substeps] Removing the deceased's organs from the body.

Ex Output:
C


Ex Input:
A room is shown with an acoustic guitar lying across a beige sofa and a stone art piece in front of the sofa with rocks in it. a person, face unseen , <sep> (A) is standing in front of the rock wall with canvas in front of him and paints on a pallet. (B) begin to play the guitar and an image of a man teaching him how to play while he's playing backs into her music room and onto a white screen, not a person else. (C) holds a lit cigarette and the approached to lift up the guitar in a lounging pose. (D) approaches the sofa and picks up the guitar.

Ex Output:
D


Ex Input:
[header] How to avoid being talkative [title] Evaluate the causes for your talkativeness. [step] You may love to talk about yourself, and not even realize that it's bothering people. You may have a nervous need to fill silence because it feels awkward for you. <sep> (A) You may also find yourself picking at things you aren't good at, but that you can't talk about. You may seem a bit self-conscious, but you don't have a habit of that, such as wanting to speak too much. (B) Or, on the rare occasions, you may be distracted by cute girls who tease you constantly. Recognizing the causes may motivate you to speak up more frequently. (C) You may feel the need to talk because you're jittery and feel like you've got to let out what you want to say. [substeps] Be aware of what may be the causes for your talkativeness. (D) An inability to participate in your conversations may also cause the frequency of your conversations to worsen. [substeps] You may, for example, have a tendency to refuse to start conversations because people constantly ask " what do you do? " or you may find that people never ask you if you're having a good day (" oh, good.

Ex Output:

C