In Figure 7.1, which worker has no contribution to total product? Figure 7.1 Two graphs stacked vertically-TP in the upper graph and MP in the lower graph are aligned so that MP is at its maximum at 2 units of L and MP is zero at 4 units of L; at 4 units of L TP is at its maximum In Figure 7.1, which worker has no contribution to total product? Second worker. Third worker. Fourth worker. Fifth worker