In a certain distribution of numbers, the mean is 50 and the standard deviation is 6. What can you say about the percentage of numbers that No bateman 29 and 71). Round your answer to the nearest tenth of a percentage. Use Chebyshev's theorem to solve the problem. O A. at least 71.4% O B. at most 28.6% O C. at most 8.2% O D. at least 91.8%