Which of the Following Justifies Grand Jury Secrecy

Which of the following justifies grand jury secrecy?

A) The confidentiality of proceedings protects the independence and free deliberations of the grand jury.
B) The secrecy protects individuals required to testify before the grand jury and encourages witnesses to testify openly without fear of retribution.
C) Confidentiality helps to ensure that individuals who may be indicted do not flee the jurisdiction to avoid impending criminal charges.
D) Only a and b
E) All of the above