The correct answer is A because the mean absolute deviation (MAD) of 1.5% is less than the sample standard deviation of 1.83%. The MAD is calculated as the average of the absolute deviations from the mean, which in this case is 0%. The sample standard deviation, on the other hand, accounts for squared deviations, resulting in a higher value. This demonstrates that MAD is a less sensitive measure of dispersion compared to the standard deviation.