Explain why the​ t-distribution has less spread as the number of degrees of freedom increases. Choose the correct answer below. A. The​ t-distribution has less spread as the degrees of freedom increase because the variability introduced into the​ t-statistic becomes greater as n increases. B. The​ t-distribution has less spread as the degrees of freedom increase​ because, as n​ increases, s becomes closer to by the law of large numbers. C. The​ t-distribution has less spread as the degrees of freedom increase​ because, as n​ increases, less information is known about by the law of large numbers. D. The​ t-distribution has less spread as the degrees of freedom increase​ because, for large values of​ n, n​30, the​ t-distribution and the normal distribution are the same.