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:
A man shows how to change a tube in a tire. he <sep> (A) puts a jack under the tube to lift it up. (B) puts a new tire on the tube. (C) takes the old tube out, puts the new one in, then pumps it up. (D) moves dirt covering the tube.

Ex Output:
C


Ex Input:
This video allows viewers to hear the testimony of a customer who has used the pro roofing service. First the man tells how he heard about the service and how great it is. he <sep> (A) also says that he chose pro roofing because the neighbors chose it and persuaded him by telling how great the service is. (B) gets the materials to do the job and is joined by a group of small children who are drinking lemonade at the lemonade stand and talking. (C) starts by explaining how he is going to first tell the detail of creating a casing using an iron, then he starts on eggs and bacon. (D) talks about some graphic details.

Ex Output:
A


Ex Input:
[header] How to convince your parents to let you stay home from school [title] Ask for permission. [step] Don't assume you will always get your way. If you want to stay home from school, whatever the reason may be, ask your parents if it's okay. <sep> (A) [substeps] Find a time when your parents are in a good mood. If you ask them at a bad time, they may not be as open to the idea. (B) If they say no, don't nag him, or give him or her the silent treatment. [title] Understand that your parents are probably busy. (C) A lot of parents may get upset or nag you at first, especially if you are trying to improve your grades or more emergency. However, don't get upset if you need help staying home from school or checking in on a sick friend/family member. (D) If you have just been admitted into school or your parent says that you don't have permission, you need to prove your trustworthiness by asking. [substeps] Tell your parents whether you've ever gone to a party or other event without permission.

Ex Output:

A