Consider the actual and forecast values contained in the table. # 1 2 3 4 5 6 7 8 Y 28 42 49 74 78 93 115 129 Forecast 25.667 40.047 54.429 68.809 83.19 97.571 111.952 126.333 At which observation is the tracking signal at its maximum value?
A) 16
B) 318.2
C) 348
D) 334.2
E) None