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 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.

Ex Output:
A

Ex Input:
[header] How to make vegan egg drop soup [title] Heat the soy milk in a saucepan to 180 f (80 c), measuring the temperature with a soup thermometer. [step] Stir the milk constantly with a wooden spoon to prevent scorching. [title] Combine the epsom salt and the boiling water, stirring well to combine. <sep> (A) [step] This creates the coagulant that will separate the soy milk into curds and whey. [title] Pour half of the coagulant into the soy milk and stir it once. (B) [step] Reduce the heat to low and allow the mixture to simmer for 5 to 7 minutes. Then remove the pan from the heat and wait for your soup to cool to room temperature. (C) [title] Combine the banana peels, peeled and dried-peas, and ginger together. [step] Pour this mixture into the saucepan and bring this water to a boil on medium-high heat. (D) [step] Make sure that you're heating the water and addition space before you begin. [substeps] Epsom salt can be purchased at very low prices at food supply stores.

Ex Output:
A

Ex Input:
[header] How to be thorough in your oral hygiene routine [title] Clean your teeth at least twice a day. [step] The best oral hygiene habit to get into is to brush your teeth at least twice everyday-once when you wake up in the morning, and again before you go to bed at night. If you do absolutely nothing else for your teeth, at least do this. <sep> (A) For your other hygiene duties (like keeping your teeth clean, eating healthy, taking a shower, etc. ), do the following : [substeps] Gently suck on a paper clip or pencil. (B) [title] Wait at least one hour after eating to brush your teeth. [step] When you eat and drink during a meal, the enamel on your teeth can soften temporarily. (C) [substeps] Check the inside of your mouth to make sure you don't have anything in your mouth that is also stinky or bad smelling. If you do have some, don't put that into your mouth. (D) [title] If you are going to be exercising, be sure to stretch, too. [step] At regular intervals throughout the day, you should stretch up and down to stretch out every muscle involved in exercising.

Ex Output:
B