Which of the Following Statements Is Accurate

Which of the following statements is accurate?

A) No one knows who will be a party's presidential nominee until the final delegate count at the national convention.
B) Only elite party members know who will be a party's presidential nominee prior to the final delegate count at the national convention.
C) Everyone knows who will be a party's presidential nominee prior to the final delegate count at the national convention.
D) None of the above