A Scientific Hypothesis Is a

A scientific hypothesis is a :

A) A question about the population that if contradictory to the null hypothesis allows researchers to reject the null hypothesis.
B) A question of interest in the evaluation project or research study. It provides a clear and concise roadmap in which to focus the study.
C) Is an "educated guess" based on prior observation, knowledge or experience that can be supported or refuted through observations or experiment.
D) None of the above.