Given the task definition and input, reply with output. Given a prompt and two completions from a language model, select the completion that is the most fluent with respect to continuing the prompt. Fluency is defined by coherency and ease of understanding, not necessarily grammatical correctness. Generate either Completion A or Completion B.

Prompt: I never understood the reason for the different tracks. I just can't 
Completion A: imagine any more reason."  "The last track is just a simple song, it's just me and my guitar," continued Nadella. 
Completion B: by Andriòn Ómál

Completion A