Sketch the graph of the function and check the graph with a graphing calculator. Before doing so, describe how the graph of the function can be obtained from the graph of a basic exponential function. f(x)=2x-4 Select the correct choice below and fill in the answer box to complete your choice. A. O B. O C. O D. Start with the graph of y = Shift the graph 4 units to the right. Start with the graph of y = Shift the graph 4 units to the left. Start with the graph of y = Shift the graph 4 units up. Start with the graph of y= down. Shift the graph 4 units