Teacher: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".
Teacher: Now, understand the problem? Solve this instance: [header] How to keep your home free of rodents [title] Clean the crawl space. [step] If you've got rodents, you'll see the insulation hanging down (they like to nest in it) and droppings on the vapor barrier. If it is bad, get rid of both. <sep> (A) The spiders begin to return if they see this. [substeps] Get rid of rats, too, so they won't get into your home with you. (B) Once the area is clean, you can see what needs to be done. Rodents can carry some nasty diseases (hantavirus for one, but it is rare) so you may want to wear high-quality respiratory protection. (C) Wild rodents are clever, and will try to crawl through any run-off that they can find to escape. [substeps] Look for flashing green, and can scent a crowded crawl space. (D) Just try different rooms and find ways to stop them from making their nest. [substeps] The crawl space should be deep enough to store mice in, but not so deep that rats cann't crawl.
Student:
B