Which of the following are​ true? If​ false, explain briefly.​a) A​ P-value of 0.01 means that the null hypothesis is false.​b) A​ P-value of 0.01 means that the null hypothesis has a 0.01 chance of being true.​c) A​ P-value of 0.01 is evidence against the null hypothesis.​d) A​ P-value of 0.01 means we should definitely reject the null hypothesis