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:
[header] How to install custom firmware [title] Record the router's model and version number. [step] These numbers are usually located near the manufacturer's logo, underneath or in back of the router. Write down the model and version information for future use. <sep> (A) [substeps] If you are using windows xp (default operating system), the model number can be found in the start menu under " system settings. " skip all the discussion menus, and then go to system preferences. (B) [title] Obtain the router's ip address and default gateway for your computer system. [substeps] Determine the ip address and default gateway for a pc. (C) [substeps] " w " with the green background is the serial number for the model. " p " with the red background means " unhappy operating system. (D) [substeps] It is easy to determine what operating system is running on your router if you don't know the model. Copy the model from the registry to convert it to your operating system.

Ex Output:
B


Ex Input:
Woman is standing in a room laying on the wall holding socks and putthing them on the feet. The woman put the brown boots on the right shoe and tie the laces. the woman <sep> (A) grabs the other shoe and put it on the left foot and tie the laces. (B) put the bent shoe on top of the head again and bend the other side using green tool. (C) also put the blue jacket on the left shoe and adjust the jacket with the left leg and the right knee. (D) puts the black socks with the green, grey, white laces on the feet.

Ex Output:
A


Ex Input:
[header] How to beat candy crush level 147 [title] Analyze the initial board layout. [step] Once you're in, analyze how your board is laid out. Do you see good moves to quickly get a striped candy or other special candies? Can you easily clear out the jelly squares and the meringues? [title] Match candies near the meringue. <sep> (A) [step] If a given candies scattered out are blocking your board entirely, placing a striped candy near the meringues can be just as effective. [substeps] Place striped candies near the meringues to block candies nearby. (B) [step] Goggle any candies with a striped candy it nearer the board. You can deal damage with them, they can be difficult to clear out, but they're still very easy to clear out and the jelly squares will be in dire trouble. (C) [step] Start by matching candies beside the meringue blocks to weaken and remove them. You will need two hits on these blocks to remove them. (D) [step] Matching candies next to the meringues will help defray the effects of your special candies and make them easier to reach. The mint chocolate candy also helps the jelly squares stay in place and makes them easier to remove.

Ex Output:

C