ITEM XII-2.  METHODS OF SPECIAL ASSESSMENT.
   Special assessments upon property deemed benefited by a public improvement shall be by any one or any combination of the following methods:
   (a)   By a percentage of the tax value of the property assessed.
   (b)   In proportion to the benefits which may result from the improvement.
   (c)   By the foot frontage of the property bounding and abutting upon the improvement.