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A civil service exam yields scores with a mean of 81 and a standard deviation of 5

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A civil service exam yields scores with a mean of 81 and a standard deviation of 5.5. Using Chebyshev's Theorem what can we say about the percentage of scores that are above 92?

Select one:

A) At most 12.5% of the scores are above 92.

B) At most 25% of the scores are above 92.

C. At least 75% of the scores are above 92.

D. At least 25% of the scores are above 92.

E. None of the above