Detailed Instructions: 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".
Q: [header] How to clean out a hamster cage [title] Examine the hamster's cage. [step] Before you start to clean, you should take a look at the hamster's cage to see what state it is in. Look for anything that needs cleaning at least once everyday, even if it's not a scheduled cleaning day. <sep> (A) Cleaning your hamster's cage too often or too little can cause them undue stress, so make sure you are cleaning the right amount when needed. [substeps] Look for any droppings or wet areas in the bedding material. (B) [substeps] Look for food boxes on the bottom of the cage, behind the doors, near the hamster's feet. Have a friend help you clean the cage so you can set a schedule and follow it all day. (C) If it seems dirty or has not been cleaned, it is likely rotten. [substeps] Check the hamster's cage for whiteheads, which can be a sign of rotting rodent droppings. (D) [substeps] Check if the cage is lint free, and if anything is old, bacteria-free, or smelling bad. Also check any holes and crevices, so the hamster can't crawl out.
A:
A