:
A. Assume the null hypothesis is true. Then, if the test
just made is repeated, the chances that its z-value will be
less than or equal to -2 is about 2.5%
B. The chance that the null hypothesis is true is about
2.5%.
Then
a. A is true, but B is not necessarily true
b. B is true, but A is not necessarily true
c. A and B are both true
d. neither A nor B are necessarily true