Which One of the Following Statements Is Accurate About How

Which one of the following statements is accurate about how the Supreme Court decides to hear a case?

A) The Supreme Court's rules are extremely rigid.
B) The Supreme Court's rules afford the justices a great deal of discretion.
C) The justices must grant certiorari whenever there is a conflict between two or more parties.
D) The justices have to hear cases when a state supreme court ruling conflicts with a Supreme Court precedent.