Which of the Following Is a Correct Statement Regarding the Grand

Which of the following is a correct statement regarding the grand jury system?

A) Under the U.S.Constitution,a grand jury is required in state court felony cases.
B) Under the U.S.Constitution,a grand jury is required in federal felony cases.
C) The defendant may not waive his or her right to a grand jury.
D) Under the U.S.Constitution,a grand jury is required in both state and federal felony cases,and the defendant may not waive his or her right to a grand jury.
E) Under the U.S.Constitution,a grand jury is required in both state and federal felony cases,but a defendant may waive his or her right to a grand jury.