The arithmetic mean of runs scored by 3 batsmen Vijay, Subhash and Kumar in the series of 100 innings are 50, 48 and 12 respectively. The standard deviation of their runs are respectively 15, 12 and...

The arithmetic mean of runs scored by 3 batsmen Vijay, Subhash and Kumar in the series of 100 innings are 50, 48 and 12 respectively. The standard deviation of their runs are respectively 15, 12 and 2. Who is the most consistent of the three? If one of the three is to be selected who will be selected ?