Date	Closing Price for WMT	Monthly Return for WMT	Closing Price for V	Monthly Return for V	Closing Market Index value	Monthly Market Return
1/1/2018	106.60		124.23		2673.61
2/1/2018	90.01		122.94		2823.81
3/1/2018	88.97		119.62		2713.83
4/1/2018	88.46		126.88		2640.87
5/1/2018	82.54		130.72		2648.05
6/1/2018	85.65		132.45		2705.27
7/1/2018	89.23		136.74		2718.37
8/1/2018	95.86		146.89		2816.29
9/1/2018	93.91		150.09		2901.52
10/1/2018	100.28		137.85		2913.98
11/1/2018	97.65		141.71		2711.74
12/1/2018	93.15		131.94		2760.17

Calculate

a) monthly return for WMT

b) monthly return for V

c) monthly market return