The Next Questions Are Based on the Following Information

The Next Questions Are Based On The Following Information:
A hydraulic press is operating correctly when the standard deviation of the pressure is less than 120 pounds-per-square-inch (psi) .Suppose you take a random sample of 15 measurements throughout the day of the psi and find the standard deviation to be 148.Suppose you want to test whether the press is operating correctly.
-Which of the following is true of the p-value?

A) It is the probability of rejecting the null hypothesis when the null hypothesis is true.
B) It is the smallest significance level at which a null hypothesis can be rejected.
C) It is the probability of rejecting the null hypothesis when the alternative hypothesis is true.
D) It is the extreme value of the test statistic obtained when the alternative hypothesis is true.