26. Locate the nodes and loops in each of the standing waves you plotted in the graph of Figure 3-22. Observe that for any given wave, the voltage at the loops and nodes of the wave decreases over distance from the sending end of the line, due to attenuation through the line. Also, observe that the waves differ in the location of their loops and nodes, depending on whether ZL is lower or greater than Z0. In fact, a. loops occur at even multiples of /4 when ZL < Z0. b. nodes occur at odd multiples of /4 when ZL < Z0, whereas they occur at even multiples of /4 when ZL > Z0. c. loops occur at odd multiples of /4 when ZL > Z0. d. loops occur at odd multiples of /4 when ZL < Z0, whereas they occur at even multiples of /4 when ZL > Z0