(a)    Land Use and Development Regulations. The Council may by ordinance adopt land use and development regulations, including but not limited to an official map and zoning and subdivision regulations.
   (b)    Urban Redevelopment. The Council may by ordinance provide for redevelopment, rehabilitation, conservation and renewal programs for: (1) the alleviation or prevention of slums, obsolescence, blight or other conditions of deterioration, and (2) the achievement of the most appropriate use of land.
   (c)    Council Action. Before acting on any proposed ordinance concerning land use and development regulations, urban redevelopment or expenditures for capital improvements, where such ordinance refers to a matter covered by the comprehensive plan, the Council shall refer the proposal to the City Planning Board, which shall within a time specified by the Council and prior to the public hearing on the proposed ordinance report its recommendations thereon. Upon adopting any such ordinance, the Council shall make findings and report on the relationship between the ordinance and the comprehensive plan and, in the event that the ordinance is not in accord with the comprehensive plan, the plan shall be amended by resolution in accordance with such findings and report.