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 handle a dog's nightmares [title] Decide whether to wake up your dog. [step] When your dog is having a nightmare, your first instinct may be to wake up your dog. However, this isn't always the best idea. <sep> (A) Waking up your dog would disrupt its sleep cycle, causing it to feel confused and possibly lash out at you. It's often better to let a dog continue sleeping through the nightmare. (B) If your dog's nightmares persist and you aren't willing to take the time to monitor your dog, it might be best to enlist the help of a veterinarian. There are several reasons for this : [substeps] When your dog is having a nightmare, your own judgment is impaired. (C) If your dog is claustrophobic or is fear fearful, you will want to be as calm as possible while your dog is having the nightmare. If the fear is mild to moderate, choosing an alternative position or location may not be a good idea. (D) While nightmares are real, traumatic experiences can also happen. [substeps] Nightmares also occur in dogs that have nightmares caused by trauma.
Example Output: A

Example Input: [header] How to protect yourself from replica watch websites [title] Use your credit card. [step] Not your debit card, but your credit card. [substeps] The only payment method you should use is credit card. <sep> (A) Using a credit card only licenses you to pay for certain services, such as security clearance. Also, you can get a replica watch at the store. (B) Then you'll pay with cash or check. If cash cannot be reached, that means that your account is not secure. (C) If you want to shop around, try to use a credit card, as they don't grant these types of deals. For example, you can use a credit card to buy super priced watches, but in return they must be an anniversary gift. (D) This is the only payment option that protects you from internet scams. Why? Because your bank has your back.
Example Output: D

Example Input: [header] How to be awesome [title] Develop a talent. [step] Whatever your talent is, pursue it. People who become " awesome " at what they do invest a lot of time into getting there. <sep> (A) [substeps] You don't have to make it something you're not good at for it to be cool. Getting it doesn't have to be a big thing. (B) Who ever said that being awesome was easy? [substeps] Some theories say that it takes about 10 , 000 hours of practice before you can truly master something. Now, that's a lot of hours, and it's totally possible to have an awesome talent before even 1 , 000 hours of practice. (C) Being fantastic is validated by being in the least amount of trouble, but have some backbone by going beyond the classroom teacher. If you do have trouble in a class you're struggling with, sit next to someone who cares about it and give them a boost. (D) Therefore, you have to show up for classes first, get excellent grades, volunteer at foundations, go to parties, etc. [substeps] Make a high school effort, even if you don't know the subject.
Example Output:
B