A Demolition Company Needs to Dynamite Rock in Order for a Dirt

A demolition company needs to dynamite rock in order for a dirt contractor to put in a house pad. If a neighbor's bay window is blown out as a result and she sues, what is a viable defense to a lawsuit, assuming it is true?

A) They exercised care in setting the explosives.
B) The seismologist can confirm the charge could not possibly have blown out the window.
C) The neighbor was contributorily negligent in having a window.
D) All of the above