A government report gives a 99% confidence interval for the proportion of welfare recipients who have been receiving welfare benefits for more than 5 years to be 21% 4.5%. Without calculations, which of the following intervals could NOT be a 95% confidence interval for the proportion of welfare recipients who have been receiving welfare benefits for more than 5 years? Please explain why. 21% 3.9% 21% 4.8% 21% 3.76% 21% 4.2%.