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:
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 bathe a pregnant guinea pig [title] Select a shampoo. [step] There are all types of shampoos for pets. For your guinea pig, make sure the shampoo is made specifically for small animals (it should say so on the bottle). <sep> (A) Otc shampoos and chemical shampoos are good choices. Avoid shampoo labeled specifically for guinea pigs and those formulated for females. (B) This way, both animals can use the shampoo and their fur will be clean. While many shampoos claim to free your guinea pig from " reye's syndrome ", this actually isn't true. (C) [substeps] Make sure that it is specially formulated for pregnancy-therefore not designed for your guinea pig. You can get shampoo from the veterinarian. (D) A small animal-specific shampoo will keep your guinea pig's skin from drying out or becoming irritated. Since your guinea pig is pregnant, the shampoo should also be non-medicated to prevent ingredients absorbing through her skin that could harm her unborn babies.

Ex Output:
D


Ex Input:
[header] How to sue a debtor [title] Look for a contract. [step] You need to prove to a judge that the debtor owes you money. In order to do that, you should produce a contract. <sep> (A) By making the contract, you deny all claims or demands the debtor has made in order to get the money to you. [substeps] If you don't have a contract, then you are not technically a " free " debtor. (B) In that contract, you have to demonstrate your ability to collect and pay the right amount of money that the debtor owes you. [substeps] You will have no contract stipulation on when and how much to collect on your money. (C) Typically, contracts are written and will state how much the debtor borrowed from you. [substeps] Look in your papers for a contract or a " promissory note " (which is the equivalent of a contract). (D) A contract should have a provision that describes how much you agree to pay the debtor. [substeps] For example, in an employee's compensation contract, you should have agreed to write a negotiation document outlining what each party agrees on.

Ex Output:

C