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 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]: A

[Q]: [header] How to catch lake trout [title] Use a light-action rod with 4 to 6 pound test line. [step] This is the best rod to use for trout fishing and allows you to use a variety of techniques to catch your trout. The lighter line has less friction with the water, allowing you cast your line to the very bottom of the lake with ease. <sep> (A) All you have to do is lightly tap the rod with your finger to get some water onto the rod. [title] Get your hand used to the catch. (B) The slower you cast the rod, the more power your line will have. [substeps] Be aware that certain fishermen only use lighter lines when they plan on doing something else. (C) [substeps] Some lake trout can be over 35 pounds, you will need a heavier rod for these. If you know you're fishing a lake that has massive fish, bring a heavier rod as well. (D) [substeps] Watch out for small rocks in the water if you're unsure how to cast your line. The rocks reflect off of lake trout very easily.
[A]: C

[Q]: [header] How to use your samsung galaxy as a baby monitor [title] Open the google play store. [step] Tap the application icon from your phone's home screen to launch the program. [title] Find a baby monitor application. <sep> (A) [step] Tap the app's icon from the home screen. [substeps] On android phones, the app icon is rainbow. (B) [step] Tap the magnifying glass icon on the upper right-hand corner of the screen and type " baby monitor " in the text field. Tap the " enter " key on your galaxy's keyboard to begin searching. (C) [step] Tap the icon in the app drawer to look for the app. When you are in the app app, tap on the baby monitor icon to open the app. (D) [step] Search for the app using a keyword keyword as the sound of its name. [title] Tap the " get a baby monitor " button.
[A]:
B