Task: Text Completion
Input (English): [header] How to decorate a pet rat cage [title] Find a house or nest for them to sleep in. [step] Rats like having a little home to sleep in when they're tired--you'll find that if you don't have a house in their cage, your rats will sleep in a corner or near the sides of the cage, usually not flopped out in the middle. In the wild, rats have burrows. <sep> (A) It's the same with domesticated rats. Instinctively, they like to have a cozy little place to sleep in. (B) Rats burrow into dark spaces so that their parents can't see their burrow. [substeps] If you do decide to use a house, make sure it can accommodate them. (C) Rat nests are essentially small holes in the ceiling. You can go about finding rat houses in basements of a large house to suit your rats. (D) Rats find hiding in yards, in the woods, or under the furniture works well. The burrow can also help with this problem.
Output (English): A