The answer is B, determine the level/ severity of crimes.
Trial definition: A court of original jurisdiction where evidence and testimony are first introduced, received, and considered. Findings of fact and law are made in the trial court, and the findings of law may be appealed to a higher court that has the power of review.
Appeals court definition: The appellate court's task is to determine whether or not the law was applied correctly in the trial court. (In other words the severity of crimes.)