I think B.
Screwdriver, tool, usually hand-operated, for turning screws with slotted heads. For screws with one straight diametral slot cut across the head, standard screwdrivers with flat blade tips and in a variety of sizes are used. Special screws with cross-shaped slots in their heads require a special screwdriver with a blade tip that fits the slots. The most common special screw is the Phillips. The screwdriver shank is made of tough steel, and the tip is hardened to minimize wear. The handle is made of wood, metal, or plastic.
Personal touch is an element or feature contributed by someone to make something less impersonal.
Doing this would avoid unnecessary problem to the program or application. This would also avoid loosing any unsaved data that were left open during the application usage.