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 identify a sphynx cat [title] Look for a sphynx coat. [step] The sphynx is sometimes referred to as the hairless cat. However, this cat's coat can range anywhere from a very short covering of fur to none at all. <sep> (A) This is caused by a natural genetic mutation. It does have a bit of fine hair around its nose, even when there is no fur anywhere else on the cat's body. (B) These cats are greyed at the base of their spines, and have sometimes dark spots. While some dyed fur may be a common feature, most sphynx cats only have stripes or patches. (C) [substeps] The sphynx is a clicker as opposed to a whistle. Avoid using a clicker if you are worried about hurting a dog. (D) You can also compare the than a sphynx coat with the other cats in your household. You can then decide how you want to use the coat.

A