instruction:
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". 
question:
[header] How to unblock a toilet when you have no plunger [title] Cover the end of a mop with a plastic bag. [step] Pull the bag over the end of the mop. Then, tie it off or secure it in place with a rubber band. <sep> (A) You can also use a rag or a toilet cloth to help secure the bag if you don't have a mop. [substeps] Try using empty containers to provide more protection. (B) After securing the handle of the mop, throw it away. [title] Turn on the water faucet. (C) [substeps] Discard any waste that falls from the end of the mop. [title] Use the bucket or bowl to catch any urine that spills out. (D) [title] Plunge your toilet with the mop. [step] Use a forceful in and out motion like you would with a normal plunger.
answer:
D


question:
A man talks and points his hair, then a woman wash and cut his hair with a machine and scissors. The man talks and after the woman continues cutting the hair. Then, the man shows bottles while talking. after <sep> (A) , the person uses scissors to cut the hair, also the clip it and then kiss it on the shoulder and the neck. (B) , the man shows a bottle and vodka and vodka, and afterward pour and mixes with water to form a drink. (C) , the woman braid his hair and, then she puts in curlers the person has used. (D) , the man blows and comb his hair, then he puts cream to his hair to stylish, then talks pointing hair.
answer:
D


question:
[header] How to remove a mole with iodine [title] Proceed with caution. [step] Even though iodine mole removal is a popular home remedy, it's currently an unverified one. There is not enough medical evidence to prove or disprove its effectiveness. <sep> (A) However, there is a strong chance you or someone else who has recently been exposed to an iodine mole may begin the process. Skip this step and it has its ups and downs for some people. (B) [substeps] On the other hand, there's no evidence suggesting that the practice is dangerous, either, and using iodine is safer than attempting to shave off the mole at home. You should never try shaving off a mole, even if you know it isn't cancerous. (C) [substeps] Learning about the risk associated with a mole is helpful in making your choice of treatment a safe one. Note that some mole removal techniques show significant resistance to iodine mole removal techniques when applied correctly, which in turn means the mole is unlikely to appear again. (D) Nonconclusive testing of an iodine mole may prove ineffective. Other diagnostic and treatment options are still pending, as theories are not yet verified.
answer:

B