Bill Is a Lab Technician and in Charge of Safety

Bill is a lab technician and in charge of safety inspections and injury prevention due to faulty equipment at a university chemistry lab.One morning,as a result of his inspection,Bill discovers a gas burner with a broken valve.Bill gets distracted and fails to put an "OUT OF ORDER/DO NOT USE" sign on the faulty burner.When the morning class arrives,Halle uses the faulty burner and is burned when it catches fire.Bill's negligence is based on:

A) nonfeasance.
B) misfeasance.
C) negligence per se.
D) res ipsa loquiter