Answer:
The correct answer is B) A case concerning a dispute between Maryland and Delaware
Step-by-step explanation:
Unlike the country's Supreme Court, the US District courts are not constitutionally required and were later set up by the Congress.
However, they are part of the Federal court system and numerous kinds of cases can be heard here.
This includes, constitution and rights issues, disputers among citizens and even federal tax and immigration cases.
However, legal disputers between different States are not contested in District Court. Instead, such cases would go to the Supreme court.