Detailed Instructions: Given a prompt and two completions from a language model, select the completion that has the most similar style to the prompt. Style is defined as the tone, word choice, grammar, and sentence structure throughout the prompt-completion pair. If a prompt is colloquial, then the completion should also be colloquial, as opposed to a completion that is encyclopedic or overly formal. Generate either Completion A or Completion B.
Q: Prompt: Thanks for the small flat rate priority boxes. I'll remember to use 
Completion A: those for the other priority boxes. I'll also do the "first letter of the alphabet" priority. I've also put together my preferred priority box 
Completion B: them for other occasions.Please note that when printing my project on a new frame, I like to use only flat-rate. This wa
A:
Completion B