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 walks into a room. the man <sep> (A) is then sitting at a table, taking out sock remotes and tools. (B) begins to smooth plaster on the wall. (C) twists the objects made from pieces of wood. (D) is dozing and waking with his arms outstretched.

Ex Output:
B

Ex Input:
A woman is seated on a couch, brushing another woman's hair. She proceeds to talk about how to do corn rows. she <sep> (A) continues walking as the woman talks. (B) begins to help the woman for a long time. (C) wets the shears, dancing as she then clips the curls into place. (D) demonstrates by adding multiple cornrows to the woman's hair.

Ex Output:
D

Ex Input:
[header] How to convert youtube to wav [title] Download an application. [step] There are numerous applications that can convert a youtube video to audio, even in the wav format. [substeps] Search online for " youtube wav freeware. <sep> (A) " choose a non-wav cartridge for the file or get one from a computer. [title] Download " wav studio pro video ". (B) " freeware are free applications; they might not offer as many options as paid software. If you want more bells and whistles, try " youtube wav convert " and consider paid programs as well. (C) " this application will link you to other applications that will have the best conversion options for you. You will have a free trial version of the app on your device. (D) " in the search bar, enter " youtube video download. Exe " and your required website url and press the enter key.

Ex Output:
B