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".

Example Input: [header] How to give first aid to an electrocuted animal [title] Remove the electrical source. [step] Before touching your pet, turn off or remove the source of electrocution. This will involve unplugging the electrical cord from the electrical socket and/or shutting off the electricity. <sep> (A) [substeps] The electrical cord wrapped around the electrical socket may be part or all of the animal's body. These will be treated separately from the rest of the animal. (B) [substeps] It may be possible to take your pet outside for this step. But be sure to call your veterinarian before doing this. (C) [substeps] Use a wooden broom handle to gently move your pet away from the electrical source. A wooden broomstick is ideal because it would not conduct an electrical current that would shock you. (D) You will still have to make sure to perform an indirect shock first. [title] Place the animal on a vinyl or glass surface.
Example Output: C

Example Input: [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.
Example Output: B

Example Input: [header] How to avoid worsening persistent back pain [title] Get up and move around. [step] Research has shown that sitting too long cannot only contribute to back problems, but is bad for your health in general. Don't stay seated for long periods of time, whether at home or at a desk job. <sep> (A) A common risk factor for back pain is a sedentary lifestyle. Take a few minutes to stretch and walk around at least once per hour. (B) If you are unable to be active, consider moving into a reclining couch or recliner. Which position best benefits you most is a sofa. (C) Get up and stretch or make a change of positions or sit up straight in a chair. If you cannot do it just wait for it to dissipate and your doctor can do it for you. (D) Sitting for long periods can cause tension to build up, which can lead to achy and tight back pain. To help ease this tension, lie down and quietly clear your head.
Example Output:
A