Section 8.8.  Same -- Action by council upon receipt.
   Upon receiving an initiatory or referendary petition from the clerk the council shall, within thirty days, unless otherwise provided by statute, either,
   (a)   Adopt the ordinance as submitted by initiatory petition;
   (b)   Repeal the ordinance, or part thereof, referred to by a referendary petition; or
   (c)   Determine to submit the proposal provided for in the petition to the electors.