The Distinction Between Courts of Original Jurisdiction and Courts of Appellate

The distinction between courts of original jurisdiction and courts of appellate jurisdiction:

A) rests on the number of jurors, 6 at an appellate court and 12 at a trial court
B) depends on whether the case is being heard for the first time
C) depends on whether it involves a state or federal question
D) normally is not important because all major decisions in cases are made by appellate judges