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:
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.

Ex Output:
B

Ex Input:
[header] How to clean rubber boots [title] Wipe away light dirt and grime. [step] If your boots aren't especially dirty, you can usually clean them easily with a damp cloth. To prevent dirtiness from building up on your boots and causing longer cleaning times, do this after each time you use your boots. <sep> (A) Before handling an object or stepping on something wet, make sure you wipe it away on a rag first. Use a mild soap and water to wipe off even the smallest traces of dirt. (B) [substeps] To increase the dirt fighting potential of your damp cloth, mix 1 tsp (5 ml) of dish soap with a gallon (1 l) of water. Douse your rag in this, and wipe down the boots. (C) [title] Grind three pounds (177 g) of dry powder on a coffee grinder. [step] The dry powder will help to transfer dirt and dust to the boots. (D) This will clear little dirt and grime off of your boots, leaving them looking brand new. [substeps] If your boots are already cleaned, you may need to consult a shoe store or partner to inspect them for a better cleaner.

Ex Output:
B

Ex Input:
[header] How to accessorize outfits with scarves [title] Wear a bulkier scarf during cooler months. [step] Longer, thicker scarves are easier to pull off, and far more comfortable, during the fall and winter months. This makes a rectangle scarf in fleece, wool, or cashmere a perfect choice for your fall outfit. <sep> (A) [substeps] Focus on going for fashionable scarves that have bows and wrapping tape to keep the scarf in place. Studies have shown that wearing scarves that are longer will make them more fashionable. (B) [substeps] Finally, a long, dangling, or floppy scarf is perfect if you're going to the beach. [title] Keep your scarves on in case they get wet. (C) [title] Wear a cardigan over a bulky scarf to wrap your blouse in. [step] It makes it far easier to layer into layers on colder days. (D) [substeps] Wear warm toned scarves such as red, orange, brown, and beige in the fall. Try pairing a long, plaid rectangle scarf with fringe with a monochromatic dress or outfit, and then belt it with a skinny belt.

Ex Output:
D