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 well during an exam or test [title] Take notes during class and study beforehand. [title] Read the instructions. [step] This is the first most important thing to do. <sep> (A) Calm yourself down as much as possible and read through the instructions. Start with your name or student id, and fill out any other required housekeeping information at the beginning. (B) It is hard to memorize the information, and if you don't read the directions for the exams there will be no reason to do well. It is also important to note everything that is included in the curriculum. (C) Take note as the teacher talks and when you read questions. Always try to remember what the instructions are for when the teacher gives them. (D) [title] Write up your test or paper ahead of time, but take no more than a few hundred notes. [step] Make sure you only memorize groups and empirical examples.
A

[header] How to treat ingrown eyelids in dogs [title] Look for squinting. [step] Squinting is an easily recognized sign of eye irritation. Your dog may squint if it feels like there's something in the eye that it can't get out. <sep> (A) In this case, the ingrown eyelid is causing the eyelashes to rub directly against the eye. If you can't tell if your dog is squinting, compare the size of your dog's irritated eye to the other one. (B) This is not always an indication of eye irritation. It's often the case that tears will build up within the eyelids, which can cause the eyes to appear unfocused and dry. (C) It may also display its eyelids twitching or blinking repeatedly. Some dog owners find it embarrassing to have their dog squint because of its inability to see. (D) Visit your vet if you notice : [substeps] Squinting irritation blockage of the eye. This is the case with retinitis, which causes squinting.
A

[header] How to remove spider veins [title] Undergo sclerotherapy. [step] In this medical procedure, a saline solution or detergent is inserted into the vein, causing it to become irritated and collapse. Once the vein has collapsed, it is no longer visible under the skin. <sep> (A) You can expect one injection per inch of spider vein. The procedure is quick and usually quite painless-the prick of the needle is the only thing you feel. (B) This procedure can open the pores in the skin, and cause more spider veins to develop. To remove the spider veins, you will need to complete one of the following steps : [substeps] Clean the area underneath your skin with a cotton ball and antiseptic mouthwash. (C) As such, laser replacement therapy is an option for the treatment of spider veins. Laser therapy is almost always recommended, since it relieves the body's pressure on the vein, causing it to become stronger. (D) In this procedure, temporary surgeon's fees can be in order. In this procedure, the scar will not fall back to just a few inches, and in turn, it will still be present.
A