PLEASE PLEASE HELP MEEE IT IS VERY EASY I AM JUST NOT SMART!!!!!!! Which of the following is a geometric sequence? A) 5, 1, –3, –7, –11, –15, ... B) 1, 5, 9, 13, 17, ... C) 0, 5, 10, 15, 20, ... D) 2, 6, 18, 54, 162, 486, ...