(3)E+WIf within the prescribed period no objection to the order has been presented to the Board by a person interested in the land, or if every such objection has been withdrawn, the Board shall, without further inquiry, confirm the order, but, if such an objection has been presented and has not been withdrawn, the Board shall forthwith cause a public inquiry to be held in the locality in which the land is proposed to be acquired, and the council and all persons interested in the land and such other persons as the person holding the inquiry in his discretion thinks fit to allow shall be permitted to appear and be heard at the inquiry.