Why Is the Supreme Court Referred to as the Court

Why is the Supreme Court referred to as the court of last resort?

A) There can be no further legal appeals after a hearing at this level.
B) It is better to have your decision settled at a lower court; going to the Supreme Court is an undesirable outcome.
C) Supreme Court Justices tend to be less sympathetic to the plight of defendants than lower-court judges and thus you are more likely to win your case at a lower level.
D) It rarely settles political disputes between the states and national government effectively, thus it is better to have a political case tried in a lower-level court.
E) Like in the Bush v. Gore decision, the Supreme Court rarely settles political disputes between major political parties or candidates in the way the public prefers.