Shall the General Plan of the City of Chino be amended to change the land use of 17.68 acres of vacant land (Zone A on Diagram) from General Commercial to Residential Planned Development-RD8 for a maximum of 84 single family dwelling units and of 3.72 acres of vacant land (Zone C on Diagram) from General Commercial to Residential Planned Development-RD20 for a maximum of 72 senior citizen dwelling units?