You Work the Second Shift in a Truck Repair Facility

You work the second shift in a truck repair facility and need to move a truck out of a stall that had been worked on by the first shift. There is no warning tag in the truck and the keys are in the ignition. Prior to moving the truck, what should you do?

A) Start the engine and move the truck since there is no posted warning.
B) Determine if the truck is safe to move prior to starting the engine.
C) Start the engine, if you do not hear anything abnormal it is ok to move the truck
D) Complain to the shop foreman about the truck being left in your stall, then move the truck.