You will be given a definition of a task first, then some input of the task.
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".

[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.
Output:
B