100. The Federal Government, in consultation with the Governments of the Units concerned, may appoint an Inter-State Commission for the purposes of-
(a) investigating and discussing subjects in which some or all of the Units, or the Federation and one or more of the Units, have a common interest; or
(b) making recommendations upon any such subject, and, in particular, recommendations for the better co-ordination of the policy and action with respect to that subject.