4. Goofy Don starts a re that soon consumes Poor Paula's trailer. Don did not know that the trailer was occupied and had no reason to know this, but it was. Aer rushing into the trailer to save her child, Paula is severely burned. Paul sues Don in negligence. Assuming that Don has breached a duty, what two arguments might he make in defense? Assume that the traditional negligence defenses apply. Will these arguments work here? Discuss fully