Consider the following statements concerning the methodology of classical hypothesis testing: A. The decision to reject the null hypothesis is made when the p-value is less than alpha. B. The decision to rejectH_oimplies that the sample data used for the test must have been inappropriate and a different sample will always need to be re-selected. C. When the level of significance is decreased for a test whereH_aspecifies that the value of the population parameter has decreased, then the critical value for the test also decreases.

only A is true

only A and B are true

only A and C are true

only B and C are true

all three statements are true