Answer:
B. involving two or more states
Explanation:
Based on my research, the Supreme Court has original jurisdiction - meaning that they hear the case for the first time - in cases involving two or more states. Such a situation was the case of Virginia v. Tennessee, 148 U.S. 503 (1893) which was brought first to the Supreme Court. The Supreme Court also has original jurisdiction in cases involving ambassadors and other public ministers.
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