\textbf{A statistical test involves the following null and alternative hypotheses.~}  \textbf{H0: $\mu$ = 64}  \textbf{Ha: $\mu$ \textgreater{} 64}  \textbf{Which of the following describes a Type II error?} 
选项为:A:\textbf{Failing to reject the null hypothesis when the population mean is 64}  B:\textbf{Failing to reject the null hypothesis when the population mean is greater than 64}  C:\textbf{Rejecting the null hypothesis when the population mean is 64}  D:\textbf{Rejecting the null hypothesis when the population mean is greater than 64}  E:\textbf{Failing to reject the null hypothesis when the p-value is less than the significance level}  请回答其中一个选项.