Which Statement Is Correct Regarding Reg-Neg Rule Making

Which statement is correct regarding reg-neg rule making?

A) It is the oldest and most accepted form of rule making involving negotiations among and between all parties before regulations are issued.
B) It is more formal than formal rule making and requires a vote by all identified interested parties prior to the issuance of a formal rule.
C) It is considered a form of legislative rule making by which interested parties may insist that an agency take certain action.
D) It is a form of rule making by which agencies may consult with other agencies before issuing informal rules so that rules of various agencies do not conflict.
E) It is a newer process by which interested groups and the agency attend sessions led by a mediator in an attempt to reach consensus.