If We Decide Not to Reject the Idea That a Sample

Multiple Choice

If we decide not to reject the idea that a sample represents a particular population,because the sample mean does not lie within the rejection region,

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 right or wrong.
D) the probability of our decision being correct is 0.05.