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:
People are standing in a swimming pool. they <sep> (A) are playing a game of water polo. (B) put on protective caps to ward off the cold. (C) dip a sponge into the water. (D) push themselves through a hole in the water.

Ex Output:
A

Ex Input:
[header] How to export contacts from outlook 2010 [title] Open your outlook 2010 program. [step] Wait for all your data to load. [title] Click the file tab on the top outlook toolbar. <sep> (A) [step] This is in the " import " menu. If you don't see all of your contacts, keep scrolling down until you find the " export individual " button. (B) [step] Select " options " in the dropdown menu. [title] Choose " advanced " from the tabs in the left hand column of the dialog box. (C) [step] An outline of the project should appear. [title] Select the import only option in the drop-down. (D) [step] On the top toolbar, click " import data from wizard. " [title] Click the name of the personal notification panel you would like to import from the list of personal notification panel files in your outlook 2010 program.

Ex Output:
B

Ex Input:
In home pet groomers demonstrate how to groom a pet. the person <sep> (A) puts a setting engage on the pets tongue and leash. (B) starts at their butt rise, combing out the hair with a brush from a red. (C) is demonstrating how the dog's hair is trimmed with electric shears at their grooming salon. (D) installs and interacts with a sleeping pet before moving away.

Ex Output:
C