Carelessness by contractors is a common cause of fire, including many fires that result in serious financial loss. It has been estimated that perhaps 20-25% of all non-domestic fires result from 'on-going work', such as refurbishment, repair and construction.

Can we draw the following conclusion?
The next fire started by contractors will result in serious financial loss.

Options are: A. Yes. B. It's impossible to say. C. No.
B.