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". 

Ex Input:
A man is standing inside a garage. He starts playing a saxophone. he <sep> (A) leans back and forth as he continues to play. (B) joins a man inside the garage. (C) sucks on the end of the saxophone as he continues to play. (D) leads a cat and a dog along as he plays.

Ex Output:
A


Ex Input:
[header] How to convert miles to meters [title] Convert statute (or land) miles to meters. [step] There are 0.000621371192237 miles in 1 meter. There are 1 , 609.344 meters in one mile. <sep> (A) You can also convert miles to meters by substituting inches with miles. [substeps] For example, when a marketed car is covered in miles miles, it is known as a nautical miles! . (B) [title] Understand that the difference between miata and philips is that the length of the number obtained were identical. [step] The number makes up 5 of the cube kilometers in a specific measure. (C) [substeps] Although there are different definitions of miles (such as a nautical mile), this conversion refers to a " statute mile, " sometimes called a " land mile. " that's the common way you would measure length and distance in the united states. (D) By earning " cos " (the number of miles per kilometer), you will earn 1609.6 miles in 296 meter increments during your monthly tillings and potty breaks. [substeps] The number of miles you can view by using the " lines " locator tool will vary depending on your region or the types of distances you find in the map.

Ex Output:
C


Ex Input:
An introduction comes onto the screen for a video about playing tennis. And man comes on to talk about the lessons that he will be teaching in the video. he <sep> (A) shows various examples of the court tennis game that he is participating in. (B) swings the racket several times to demonstrate a good form for swinging the tennis racket. (C) begins by introducing several tennis sanding techniques and how to handle them as a practice tennis player. (D) starts by letting you know when he has finished his tutorial and who and what he teaches.

Ex Output:

B