Which of the following describes the transformation of g(x) = 3 * (2) ^ (- x) + 2 from the parent function f(x) = 2 ^ x reflect across the x-axis, stretch the graph vertically by a factor of 3shift 2 units up reflect across the yaxis, stretch the graph vertically by a factor of 2shift 3 units up reflect across the x-axis, stretch the graph vertically by a factor of shift 3 units up reflect across the y-axis, stretch the graph vertically by a factor of , shift 2 units up 3