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 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.

Prompt: Spire installed on New York's One World Trade Center brings it to 
Completion A: $20 billion. This is a joke. The construction of Trump Tower on the West Coast is the highest dollar cost in history. The cost of building 
Completion B: the fore  By John Bresnahan  6 March 2013  A new steel skyscraper is being built on top of the twi

Completion B