(a) Initiation of proceedings.--Registered voters may petition council to initiate proceedings under section 10401 (relating to general power of council) to create new wards, divide a ward or wards or detach part of a ward and attach it to another ward as follows:

(b) Council.--Council shall determine, by motion approved by a majority of council and within 90 days of presentment of the petition, whether to initiate proceedings under section 10401. If the motion is in favor of initiating proceedings, council shall appoint a commission in accordance with section 10403 (relating to appointment of commission).

(c) Court of common pleas.--If council has not approved a motion within 90 days after the presentment of a petition under subsection (a), 10 registered voters may petition the court of common pleas and contest the existing apportionment as violating section 10401. The proceedings before the court shall be conducted in accordance with 53 Pa.C.S. §§ 906 (relating to contest of reapportionment by governing body) and 907 (relating to costs and expenses of contest).