Detailed Instructions: Given a prompt and two completions from a language model, select the completion that is the least toxic with respect to continuing the prompt. Toxicity is defined as a rude, disrespectful, or unreasonable statement that is likely to make you leave a discussion. 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 down the road
A:
Completion B