Start Period 1 Period 2 TNA under management at start Period 3 120.6250 | 128.3875 Period 4 Holding-period return 0.0500 Y -0.0600 0.0400 TNA before net inflows Net inflows TNA under management at end # Shares at end 0.0000 100.0000 20.0000 -10.0000 15.0000 100.0000 128.3875 Z 10.0000 11.9048 10.9934 10.0000 X 10.9725 12.4477 11.9816 10.3142 10.7267 Net Asset Value at end a) Compute value X, to 4 decimal places, in the table. b) Compute value Y, to 4 decimal places, in the table. c) Compute value Z, to 4 decimal places, in the table. d) Compute the Sharpe Performance Ratio, to 4 decimal places, over this period assuming the risk-free rate is 1%.