An airline has determined that the average weight of a traveler's suitcase is 39.7 pounds, with a standard deviation of 5.2 pounds. Assuming a normal distribution of suitcase weights, what percentage of travelers' suitcases weigh less than 44.9 pounds? A. About 34% of the suitcases weigh less than 44.9 pounds. B. About 84% of the suitcases weigh less than 44.9 pounds. C. About 97% of the suitcases weigh less than 44.9 pounds. D. About 68% of the suitcases weigh less than 44.9 pounds