For any distribution with finite variance, what minimum proportion lies within kσ of the mean (k

For any distribution with finite variance, what minimum proportion lies within kσ of the mean (k > 1)?

A At least 1 − 1/k

B At least 1/k²

C At least 1 − 1/k²

D At most 1 − 1/k²

Correct Answer: Option C