(3)On the expiration of the period of supersession specified in the notification issued under sub-section (1), the Central Government may-(a)extend the period of supersession for such further term, not exceeding six months, as it may consider necessary, or(b)reconstitute the Board by fresh appointment and fresh election, and in such case, any persons who vacated their offices under clause (a) of sub-section (2) shall not be deemed disqualified for appointment or election, as the case may be, or(c)reconstitute the Board by appointment only for such period as it may consider necessary and in such a case, the persons who vacated their offices under clause (a) of sub-section (2) shall not be deemed disqualified for such appointment merely because they were Trustees when the Board was superseded:Provided that the Central Government may, at any time before the expiration of the period of supersession, whether as originally specified under sub-section (1) or as extended under this sub-section, take action under clause (b) or clause (c) of this sub-section.