Which of the following is true of the p-value? O a. It is the probability of rejecting the null hypothesis when the null hypothesis is true. O b. It is the smallest significance level at which a null hypothesis can be rejected. O c. It is the extreme value of the test statistic obtained when the alternative hypothesis is true. O d. None of the suggested answers are correct O e. It is the probability of rejecting the null hypothesis when the alternative hypothesis is true