If the administering authority determines to suspend an investigation upon acceptance of an agreement to eliminate the injurious effect of subsidized imports or imports sold at less than fair value, the Commission shall, upon petition, initiate an investigation to determine whether the injurious effect of imports of the merchandise which was the subject of the suspended investigation is eliminated completely by the agreement. Petitions may be filed by a party to the investigation which is an interested party described in paragraph (C), (D), (E), (F), or (G) of section 771(9) of the Act. Investigations under this section shall be completed within seventy five (75) days of their initiation.