The command which is called a three-finger salute in computers is?

A. Ctrl + Alt + Delete
B. Ctrl + Shift + Escape
C. Ctrl + Shift + Enter
D. Ctrl + Alt + Arrow key

Control-Alt-Delete (often abbreviated to Ctrl+Alt+Del, also known as the “three-finger salute” or “Security Keys”) is a computer keyboard command on IBM PC compatible computers, invoked by pressing the Delete key while holding the Control and Alt keys: Ctrl + Alt + Delete.