If We Decide to Reject the Idea That a Sample

Multiple Choice

If we decide to reject the idea that a sample represents a particular population,because the sample mean lies within the region of rejection,

A) although the probability is low,our decision may be wrong.
B) the probability is high that our decision is wrong.
C) we cannot know the probability of our decision being wrong.
D) the probability of our decision being correct is 0.05.