Unless We Use the Correct from the T-Distribution for the Appropriate

Multiple Choice

Unless we use the correct from the t-distribution for the appropriate N, $\begin{array}{c}t_{\text {crit }} \\H_{0} \\H_{0}\end{array}$

A) we will fail to reject .
B) we will always reject .
C) the probability of making a Type I error will increase.
D) the probability of making a Type I error will not equal α.