If the initiative petition is signed by voters not less in number than 10 percent of the entire vote cast in the county for all candidates for Governor at the last gubernatorial election preceding the publication of the notice of intention to circulate an initiative petition, the board of supervisors shall do one of the following:
(a)
Adopt the ordinance without alteration at the regular meeting at which the certification of the petition is presented, or within 10 days after it is presented.
(b)
Submit the ordinance, without alteration, to the voters pursuant to subdivision (b) of Section 1405, unless the ordinance petitioned for is required to be, or for some reason is, submitted to the voters at a special election pursuant to subdivision (a) of Section 1405.
(c)
Order a report pursuant to Section 9111 at the regular meeting at which the certification of the petition is presented. When the report is presented to the board of supervisors, it shall either adopt the ordinance within 10 days or order an election pursuant to subdivision (b).