Upon such appeal, the legislative body may:
(a) Remedy and correct any error or informality in the proceedings.
(b) Revise and correct any of the acts or determinations of the person who made the diagram and assessment.
(c) Confirm, amend, or correct the assessment or diagram in such manner as seems just to the legislative body.
(d) Direct the persons who made the assessment and diagram to correct them in any particular.
(e) Require and accept a modification of any bondholders’ proposal in accordance with any protest.