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 befriend dogs [title] Make sure the dog is friendly. [step] When approaching a strange dog, be particularly aware of its body language. If an owner is present, ask the owner if the dog is friendly. <sep> (A) Make sure the dog wants to be petted. You can easily alienate a dog by approaching one that is nervous or agitated. (B) If a dog seems hesitant to meet you or extends its hand to you, it's the opposite of friendly. [substeps] Avoid approaching a dog by walking near it and stopping so that the dog can see you. (C) Usually, a dog looks friendly when greeting a stranger but when the dog is not, try something more benign. [substeps] Some common signs of friendliness on dogs are legs waving, laughing, and shoulder-shaking. (D) Common signs of friendly behavior are not always direct stares. If a stranger approaches the dog, its body language may indicate a definite dislike.

Ex Output:
A


Ex Input:
[header] How to fix cake disasters [title] Fix a burned cake. [step] The first sign is often the smell and that " d'oh! " moment as you realize you have forgotten the cake! Try the following fixes before tossing it. [title] See if it is possible to cut off the burned parts. <sep> (A) [title] Remove burnt parts at home or in a garage/shed. [step] The heat from burnt pieces of cake can sometimes smother something. (B) [step] Does it melt away in the oven? If it doesn't, lower the oven temperature to 350 ° f (177 ° c). If it cannot, gently pour cake remover over the burnt parts. (C) [step] Do this with care and only if the cake is slightly burned. Cut the base and edges off and cover with frosting or icing. (D) [step] If it is and they are still alive, then you may be able to clean those parts and replace them, but beware that many cake shells have un-damaged parts. A possible alternative is to cut the cake's parts off while the fire is still out.

Ex Output:
C


Ex Input:
[header] How to bend rebar [title] Understand the structural issues possible with manually-bent rebar and know how to avoid them. [step] When you bend metal, you naturally weaken it. When done correctly, however, you can minimize damage and still get the shape you need to complete the project. <sep> (A) [substeps] Badly bent rebar acts as a buffer for the metal particles of the laser beam. The piece of rebar you are bending dissolves when squeezed into contact. (B) This effect is part of the re-bend method. The process is a little different than rebending a rubber band, but the difference is that you bend it in half by simply opening up a v on each end. (C) Because of this, it's important for you to know how to modify the shape you want the rebar to be. If you have a badly bent rebar, you'll likely create grooves in the rebar that introduce excess material. (D) Keep the following in mind as you work : [substeps] Always note the grade and size of the bar you're bending, checking against the equipment you're using to ensure it works. Check with your project engineer to ensure your bends meet the minimal internal bend diameter.

Ex Output:

D