What Is a Major Difference Between a One-Tailed Significance Test

Multiple Choice

What is a major difference between a one-tailed significance test and a two-tailed significance test?

A) For a given alpha level, Z (critical) is more extreme for the one-tailed test.
B) For a given alpha level, Z (critical) is less extreme for the one-tailed test.
C) The one-tailed test uses a test statistic, whereas the two-tailed test uses the critical region.
D) The two-tailed test uses a test statistic, whereas the one-tailed test uses the critical region.