A Researcher Reports That Results of a Study Were Not

A researcher reports that results of a study were not statistically significant. How is this to be interpreted?

A) Intervention was not strong enough to make a difference.
B) Researcher does not have enough evidence to reject the null hypothesis.
C) Researcher's logic or conceptualization in setting up the study was faulty.
D) Topic is of no further interest to nurse researchers or clinicians.