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: A person is seen playing the drums while others watch on the side. the men <sep> (A) laugh with one another as the man continues to play. (B) lower their cymbals while still playing. (C) play the drums on the stage while others watch on the side. (D) continue playing the drums on the beach and ends with a picture of the drum player.
Example Output: A

Example Input: . a small boy wearing a black and red striped shirt <sep> (A) performs flips and hand springs on a grassy field with a wild animal. (B) grabs a scooped ice cream scoop and scoops out all the melted ice cream. (C) hits a beer pong table in a dimly lit room. (D) is sitting with a drum set and playing drums.
Example Output: D

Example Input: [header] How to protect a chipped tooth [title] Consult a dentist. [step] When you chip a tooth, you should consult a dentist right away. If there is pain or bleeding, this is especially important. <sep> (A) Some dentists recommend this and others advise even more caution. [substeps] Tooth loss or even split molars are very common and can be serious. (B) Even if you do not feel pain, but suspect you have a chipped tooth, you should call a dentist as soon as it is feasible. You may not be able to see or accurately assess the damage yourself, and even if you are not in pain at the moment, complications could develop after a few days or weeks. (C) You may have an underlying reason for your chipped tooth. This can include tooth tyvek, a chemical that causes the reaction between uric acid and phosphate that acts as a neutralizing agent. (D) Seeking help from a dentist can be very dangerous, and should be kept out of the way by your oral surgeon. [substeps] A dentist's appointment is often recommended, though if you are not sure who to approach, you could simply start in your phone book and ask friends or family if they have experience breaking teeth.
Example Output:
B