Which of the Following Statements Is True

Multiple Choice

Which of the following statements is true?

A) If the calculated value of F statistic is higher than the critical value, we reject the alternative hypothesis in favor of the null hypothesis.
B) The F statistic is always nonnegative as SSRr is never smaller than SSRur.
C) Degrees of freedom of a restricted model is always less than the degrees of freedom of an unrestricted model.
D) The F statistic is more flexible than the t statistic to test a hypothesis with a single restriction.