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:
We see a man teaching others to sharpen a knife in a butcher shop. The man wets the sharpening stone. Two men in the back laugh at something. the instructor <sep> (A) shows us a basket of pennies. (B) checks the knives and uses the sharpened knife to sharpen a one. (C) uses a sharpening rod for the knife. (D) puts a paper in the sink.

Ex Output:
C


Ex Input:
[header] How to assemble an emergency roadside kit for a desert climate [title] Prepare for car repairs [substeps] Include foam sealant or a battery-powered air compressor in your desert roadside kit. These will aid in a quick repair in case of a flat tire. Also store an extra jug of coolant in case your car overheats. <sep> (A) Supply any diicer you won't need to replace whenever your car loses power. A small backpack with flexible, flexible, and weather resistant backpacks are more critical. (B) Carry jumper cables and a tire jack in your car trunk at all times. [title] Stay hydrated [substeps] The temperature of the desert will be one of your worst enemies if you get stranded in a roadside emergency. (C) Using heat-powered oxygen pumps, burns fuel, or compresses materials may be delays during basic car repairs. [title] Obtain specialized supplies [title] Find the correct car mechanic. (D) [title] Buy a driver's side cooler. [step] Gas stations and convenience stores are excellent outdoor places to pack.

Ex Output:
B


Ex Input:
[header] How to stop being viewed as a nerd [title] Avoid dressing " nerdy. [step] " the most powerful social stereotypes towards nerdy people concern their clothing and appearance. Society anticipates a nerd as someone who is dressed slovenly or unkempt. <sep> (A) They are also fairly adept at hiding, so go for it. This way they are more likely to be seen as nerd on an outfit that is too revealing. (B) Perhaps some or all of their clothing is branded by icons from their favorite movies or video games. If you're looking to not be seen as a nerd--for whatever reason--look to your appearance first. (C) Making sure you are wearing appropriately sized, neat clothes or clothing that is appropriate, no matter how nerdy, is important when you start an outfit. [substeps] Research shows that wearing a change in class look, accompanied by pale skin, diagrams showing nerd personalities, and jokes are to be expected to appear nerdy even in maths. (D) For normal punks, the only thing punks are about. Be gentle but thorough in providing appropriate clothes and accessories.

Ex Output:

B