Section 5.10    Council Procedure.
    Upon receiving an initiatory or referendary petition from the Clerk, the Council shall, within thirty days, either:
   (a)   If it be an initiatory petition, adopt the ordinance as submitted in the petition or determine to submit the proposal to the electors of the City;
   (b)   If it be a referendary petition, repeal the ordinance to which the petition refers or determine to submit the proposal to the electors of the City.