Answer:
B. Trial, appellate, and high courts.
Explanation:
The federal court is court system that is usually in charge of lawsuit between either two states in a country, a country and citizens, a country and other countries etc. While the state court system have an authority to decide on cases between citizens in a state, a state and its citizens, etc.
Both courts operate on the same set of laws that has been established in cognizance of with the country's constitution. Therefore the verdict by either system is based on justification and purity. A major similarity between the two systems is trial, appellate, and high courts.