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Option E

option :A

Range of set A has to be greater than 1 the reasons are:

1)Set A has all positive numbers.

2)It cannot have all zeros,if so the square of these number would be zero too and the S.D of both would be same.

3)I think it is not necessary that at least one should be zero and all 4 numbers equal to zero will be valid for this choice which would be wrong.

4)The S.D of B>S.D of A so the range of B>range of A.

Answer : E

A. I only

hmm SAT B?