(B) Program requirements Whenever the Secretary determines and announces that for any consecutive 4-week period, the Friday through Thursday average price quotation for the lowest priced United States growth, as quoted for Middling (M) 1 3/32 -inch upland cotton, delivered to a definable and significant international market, as determined by the Secretary, exceeds the prevailing world market price, there shall immediately be in effect a special import quota. (3) Quantity The quota shall be equal to the consumption during a 1-week period of cotton by domestic mills at the seasonally adjusted average rate of the most recent 3 months for which official data of the Department of Agriculture are available or, in the absence of sufficient data, as estimated by the Secretary. (4) Application The quota shall apply to upland cotton purchased not later than 90 days after the date of the Secretary’s announcement under paragraph (2) and entered into the United States not later than 180 days after that date. (5) Overlap A special quota period may be established that overlaps any existing quota period if required by paragraph (2), except that a special quota period may not be established under this subsection if a quota period has been established under subsection (b). (6) Preferential tariff treatment The quantity under a special import quota shall be considered to be an in-quota quantity for purposes of— (A) section 213(d) of the Caribbean Basin Economic Recovery Act ( 19 U.S.C. 2703(d) )