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". 

[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.
C

[header] How to treat your customer while serving them [title] When the customer approaches your till point, greet them nicely. [step] This means you should acknowledge the customer with eye contact. Say " hello " and smile. <sep> (A) [title] Apologise for any wait, no matter how short. [step] The customer might not understand why they have had to wait. (B) [substeps] Also greet them in a professional manner. Always state your name, address, and similar things. (C) Offer him or her a fresh drink once in awhile. [substeps] Remember to shake each customer's hand. (D) If you don't meet their smile they'll get bored and start saying no. To greet the customer again, do a brief " hi " and introduce them to your horde.
A

[header] How to grow winter onions [title] Prepare your plot in the late summer or autumn. [step] You can plant your sets as early as august, but many gardeners prefer to wait until october, when the weather has significantly cooled. You can even plant your sets in the early winter, as long as the ground has not become solid yet. <sep> (A) [substeps] Start from mid-january to october. [substeps] If you want to plant winter onions after the last frost in the summer and after it has either dropped below 40 degrees fahrenheit (4 degrees celsius) or been sufficiently dry, your plot should be ready by then. (B) Each set of onions can mature in the pot, so it is best to wait until summer to try again. [title] Choose a location to plant your onions, but keep away from those that are specific to your location. (C) [title] Check the weather forecast for the next growing season. [step] While healthy onions are hardy, they don't want to die if there's snow on the ground. (D) [title] Select a sunny spot in your garden. [step] Winter onions are hardy enough to grow in a variety of conditions, but they prefer to soak in full sun.

D