When necessary to resolve disputed issues of material fact in a negotiability or bargaining obligation dispute, or when it would otherwise aid in decision making, the Authority, or its designated representative, may, in its discretion:

(a) Direct the parties to provide specific documentary evidence;

(b) Direct the parties to provide answers to specific factual questions;

(c) Refer the matter to a hearing pursuant to 5 U.S.C. 7117(b)(3) or (c)(5); or

(d) Take any other appropriate action.