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 polish rocks [title] Choose the right rock. [step] You can polish any stone you wish, but there are certain characteristics of a stone that will make it easier to polish. If you want an easy stone to polish, pick a somewhat softer stone like onyx, limestone or calcite. <sep> (A) [substeps] You can polish diamond, granite or ceramic stones by cutting thin pipe holes or inserting dry mortar into one side of each hole. Look for a stone that resembles a diamond, but not necessarily a diamond. (B) Otherwise, a smoother, more pumice-like stone will be more difficult to polish. [substeps] Emeralds and equilateral manganese are both excellent mineral polishes. (C) Stones that are very hard will take a much longer time to polish. However, though hard rocks take a long time to sand, they yield more shine than softer rocks. (D) Softer rocks will actually work more well, and might look better to polish very old stones, but brighter stones tend to chip quicker. [substeps] Rubies, sapphires, and emerald are good options.

A: C
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Q: [header] How to prepare for a settlement conference [title] Decide what you want. [step] Settlement is voluntary, which means no one can force you to accept a settlement you disagree with. However, before going to the conference, you need to know your goals. <sep> (A) You want to know them at an appropriate time and place. [substeps] You can find settlement conferences in the following ways: look for settlement conferences that do not include the word " settlement " in the list of conference participants-the usual " settlement " or " offer " word from the list of attendees. (B) These will depend on the type of case. [substeps] In a divorce dispute, for example, you'll need to determine child custody, visitation, child support, and spousal maintenance (alimony). (C) If you disagree with the other side, then your agreement could lead to bad treatment. [substeps] You should take into account how much legal costs you are entitled to receive for your settlement. (D) Before going to the conference, talk to your doctor and other healthcare providers about what you want to do, and what their rationale is. [substeps] Often, settlement conferences are for families or people willing to pay for health care.

A: B
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Q: [header] How to do floral eyeliner [title] Select 3 colors. [step] Start at the center of your lash line. Using your first color, draw an " x " at the center of your lash line. <sep> (A) This will begin outlining the very tips of your lashes. [substeps] Make sure you only use the top side of your lashes for this. (B) It should look like, a small circle with the black lines, " a " and " y. " to tighten the lines, use your hands to press against your eyes to avoid drawing black. (C) The ends of each line of the " x " should touch your lash line. Then, add a line going straight down through the " x " and another line crossing vertically through the center. (D) Start this shape when doing a " l " shape. [substeps] Moving outward from the center of your eyelid, draw a vertical line about twice the width of your eyeshadow pencil in the space between your eyelid and the lash line.

A:
C
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