Given the task definition and input, reply with output. 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".

[header] How to understand a cat [title] Figure out your cat's story. [step] Is he a stray? Did you breed him yourself? Where did you get him? Find what your cat's life was like before you received him. You can ask the previous owner, the doctor, or the people who work at the animal shelter. <sep> (A) These people might be able to answer the questions that you have. [title] Decide how long your cat has lived with you. (B) [title] See if you can guess what it was like to be him. [step] If he was a stray, try to imagine how lonely and terrifying it must have been. (C) [substeps] Do your research before choosing a residence. Remember, instead of buying a mansion or small apartment, get a house. (D) [title] Remember that cats are not just pets. [step] Many feral cats have been killed or abandoned by humans.
B