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:
Two men are talking in a news room. some people <sep> (A) are riding bikes in snowy terrain. (B) have gathered outside to watch. (C) are kayaking in the river. (D) are outdoors playing a game in a sandy field.

Ex Output:
B


Ex Input:
[header] How to involve a dog in pet therapy work [title] Consider your dog's temperament. [step] The main requirement for a therapy dog is that they must be incredibly calm, emotionally secure, and comfortable around all types of people. If your dog is nervous, shy, aggressive, or has any other qualities that cause him to behave in standoffish or threatening ways around people, then he would not be a good fit for therapy work. <sep> (A) Decide what you will be doing with your dog before giving it time to develop socialization skills. [substeps] Common characteristics of a therapy dog include a poor attitude, lowered behavior, and aggression. (B) A therapy dog needs to be calm and comfortable when : [substeps] He is approached by or surrounded by many people (children or adults). He is roughly touched or hugged by someone. (C) [substeps] This is especially true if he is a tense, unpredictable, and impolite dog. [title] If your dog is at a loss for words, help him learn some helpful skills. (D) [substeps] Dogs with a history of trauma and anxiety are less likely to engage in therapy. Anxiety, fear, or mistrust issues can cause a good experience for a therapist with a pet.

Ex Output:
B


Ex Input:
[header] How to deworm a kitten [title] Take your kitten to the vet. [step] The best way to deworm your kitten is to take them to the vet. Your vet will be able to diagnose the specific type of worm and give your kitten the proper treatment. <sep> (A) You may also be able to give your kitten homemade medicine, which cats believe is great for their health, but relieves the symptoms of disease as well. [substeps] Pet stores sell specially formulated medicine which your vet prescribes. (B) They will likely give you a prescription for a variety of antibiotics and recommend methods for deworming bacteria. [substeps] Don't forget about removing all skin from kittens' ears and carefully grooming any major areas with a nylon pad and brush after some time. (C) In general, your kitten should be dewormed at least every six months. [substeps] If your kitten is not able to eat its food, or you notice that its food intake changes, you should take it to the vet. (D) [substeps] Even if you deworm your kittens at home to begin with, you need to take them to the vet by six months old to get a fecal test. If your kitten is still nursing from their mother, you should take the mother cat in to vet to get dewormed as well.

Ex Output:

D