Which of the following correctly lists the data sets in order of least to greatest standard deviation?
I. 8, 9, 10, 11, 12, 13
II. 12, 12, 12, 12, 12, 12
III. 47, 56, 58, 60, 64, 69  Choose the correct choice from the following choices:
A) I, II, III B) II, I, III C) III, I, II D) II, III, I E) III, II, I
out of three given sets,   II has all numbers same, so it has zero standard deviation hence it is Least   I has consecutive numbers , hence all are closedly spaced hence std deviation will be less   while in III,numbers are spread widely hence std deviation should be more than III   hence order should be II, I,III   IMO II, I, III
<result>B</result>
Which of the following correctly lists the data sets in order of least to greatest standard deviation?
I. 8, 9, 10, 11, 12, 13
II. 12, 12, 12, 12, 12, 12
III. 47, 56, 58, 60, 64, 69