You will be given a definition of a task first, then some input of the task.
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 tell the difference between a crocodile and an alligator [title] Look at the snout. [step] The easiest way to tell the difference between crocodiles and alligators is to look at their snouts. Alligators have a wide, rounded, " u "-shaped snouts with larger noses, whereas crocodiles have longer, thinner, pointed " v "-shaped snouts and smaller noses. <sep> (A) Alligator snouts are also shorter than crocodile snouts. [substeps] The broad snouts that alligators have give them more strength than crocodiles. (B) Crocodiles have only two stingers, so if you see two stingers, you are likely to have crocodile teeth. [title] Consider the shape of the crocodile's body. (C) Look at the neck and facial features closely to determine which features you might find visually alarming. [title] Look at the animal's overall body. (D) Alligators usually have jaws that are like a shark's. [title] Be cautious with alligators and crocodiles.
Output:
A