; or (iii) notify all interested parties that the inquiry request will be addressed through a determination under section 781A as to whether a particular type of merchandise is within the class or kind of merchandise described in an existing finding of dumping or an antidumping or countervailing duty order. (B) Extension The administering authority may extend the deadline under subparagraph (A) by a period not to exceed 15 days if an interested party has placed information on the record in response to the request for a circumvention inquiry. (4) Determinations (A) Preliminary determinations (i) In general Except as provided in clause (ii), not later than 150 days after the date on which the administering authority initiates a circumvention inquiry under paragraph (1) or (3)(A), the administering authority shall make a preliminary determination, based on the information available to it at the time of the determination, of whether there is a reasonable basis to believe or suspect that the merchandise subject to the inquiry is circumventing an existing finding of dumping or an antidumping or countervailing duty order. (ii) Extension The administering authority may extend the deadline under clause (i) by a period not to exceed 60 days. (B) Final determinations (i) In general Except as provided in clause (ii), not later than 150 days after issuing a preliminary determination under subparagraph (A) with respect to a circumvention inquiry, the administering authority shall make a final determination of whether the merchandise subject to the inquiry is circumventing an existing finding of dumping or an antidumping or countervailing duty order. (ii) Extension The administering authority may extend the deadline under clause (i) by a period not to exceed 65 days. (C) Other class or kind determinations If an inquiry request under paragraph (2)(A) is addressed through a class or kind determination under section 781A, the administering authority shall make such determination not later than 335 days after the filing of the