The "Rule of Four" Refers to

The "rule of four" refers to

A) the number of Supreme Court justices needed to decide a majority opinion.
B) the number of minority justices currently serving on the Supreme Court.
C) the number of cases that most justices are willing to review in any given court session.
D) the number of Supreme Court justices that need to agree to grant review to a case in order to get a case on the docket.
E) the number of solicitors general in charge of litigation of the federal government.