(A) The Council shall provide in its rules for the procedure of adopting ordinances, subject to the requirement of this Charter.
(B) Unless declared to be an emergency ordinance as provided in Section 5.3(B), no ordinance shall become operative until twenty days after adoption by the Council, or by the electors of the city in the case of an ordinance adopted through initiatory procedures.
(C) No ordinance which provides for or establishes a tax shall become operative less than thirty days after adoption by the Council or the electors of the city in the case of an ordinance adopted through initiatory procedures.