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".

Input: Consider Input: [header] How to recognize symptoms of sickle cell disease (scd ) [title] Get tested. [step] Sickle cell disease can be detected with a simple blood test, so if you think you may have the disease, see a doctor to get tested right away. In the united states, all newborns are required to be screened for sickle cell disease. <sep> (A) [substeps] The screening process is lengthy and requires some paperwork so a doctor can make sure they're perfect. In order to receive diagnosis or treatment, the doctor must first perform a screening test. (B) The more advanced the developing disease, the more likely it is that you may have sickle cell disease. It is a serious disease that causes weight gain, and may affect when you are pregnant. (C) The centers for disease control and prevention (cdc) website has more information on the disease than it does on its own. [title] Be aware of your potential risk factors. (D) This is because early treatment is very beneficial to patients. [substeps] It is also possible to do prenatal screening for sickle cell disease by testing fetal tissues that are collected by chorionic villus sampling or amniocentesis.

Output: D

Input: Consider 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.

Output: A

Input: Consider Input: [header] How to get rid of people that hate you [title] Focus on how they make you feel. [step] It can be tough to recognize when someone is toxic and not in your best interest, especially if it's someone you've known a while. One sure sign of a toxic, negative person is listening to your gut and how they make you feel. <sep> (A) [substeps] You may dread being around them and exhibit signs of nervousness anticipating meetings like sweat palms, nausea and a general uneasy feeling. Toxic, negative people tend to exude pessimism and can even be physically or verbally abusive. (B) If a toxic person pushes you, tries to get under your skin, or hangs out with anyone without having a positive reaction, then then you may be close to a toxic person. For example, say you dislike being asked how the person acts at school. (C) Putting your feelings into words can be difficult or painful. [substeps] Put the words " i feel like this person is toxic " in a list of reasons for feeling badly about yourself. (D) If you really like someone, you can also notice how they treat you. [substeps] Are they affectionate, callous, never take you seriously or use hurtful comments? If so, it's a good sign.
Output: A