Protective Puts Offer an Advantage Over Stop-Loss Orders in That

Protective puts offer an advantage over stop-loss orders in that

A) the stop-loss order will be executed as soon as the stock price reaches the trigger point,without allowing for a subsequent rebound,while the put allows the holder to wait.
B) the stop-loss order is costless to place.
C) the stop-loss order may actually be executed at a price below the trigger price.
D) both a and b are true.
E) both a and c are true.