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".

Example Input: Two men are inside a gym together. They are engaged in a game of table tennis. they <sep> (A) kick the tennis ball back and forth against the wall. (B) hit the ball back and forth over the net. (C) crash into each other and then continue to play the game. (D) punch and kick at each other as they play.
Example Output: B

Example Input: [header] How to make iced green tea [title] Boil 4 cups (950 milliliters) of water in a large pot. [step] If you would like to make a single serving, boil 1 cup (240 milliliters) of water in a kettle instead and pour it into a mug. [title] Take the pot off the stove, and add 4 to 6 tea bags into the water. <sep> (A) [step] Swish the tea bag or bag around in the water to help dissolve it, then you're ready to serve it. [title] Add 4 to 6 teabags to the pot. (B) [step] The more tea bags you use, the stronger your tea will become. If you would like to make a single serving, dip 1 tea bag into your mug. (C) [step] Make sure that the tea bags reach the proper amount of length to minimize the risk of scorching. [title] Turn the heat off and let the tea steep for 10 to 15 minutes. (D) [step] This will have the texture of a teaspoon of ginger. [title] Leave it to steep for about half an hour.
Example Output: B

Example Input: [header] How to turn on an ipod touch [title] Ensure that the ipod touch is charged. [step] If the battery has run out, the ipod touch will not turn on. Plug the ipod touch into a power outlet and let it charge for an hour before trying to turn it on again. <sep> (A) [substeps] If it fails to charge before this point, a power-off is advisable. [title] Firmly and quietly turn the ipod touch on. (B) [title] Remove the ipod touch from the bag. [step] The plastic piece that holds it in place may break if you repeatedly touch the item with your bare fingers. (C) [title] Press and hold the power and home buttons. [step] Hold both buttons for about ten seconds. (D) [substeps] A new battery, such as a usb battery, will have a light display on it so you can see if it's charging. [title] Press the battery to see if it is charged.
Example Output:
C