; (BB) the difficulty of remedying the harm to national security that may result from completion of the transaction; and (CC) the difficulty of obtaining information on the type of covered transaction through other means. (cc) Submission of written notice as an alternative Parties to a covered transaction for which a declaration is required under this subclause may instead elect to submit a written notice under clause (i). (dd) Timing of submission (AA) In general A declaration required to be submitted with respect to a covered transaction by item (aa) or (bb) shall be submitted not later than 45 days before the completion of the transaction. (BB) Written notice If, pursuant to item (cc), the parties to a covered transaction elect to submit a written notice under clause (i) instead of a declaration under this subclause, the written notice shall be filed not later than 90 days before the completion of the transaction. (III) Penalties The Committee may impose a penalty pursuant to subsection (h)(3) with respect to a party that fails to comply with this clause. (IV) Committee response to declaration (aa) In general Upon receiving a declaration under this clause with respect to a transaction, the Committee may, at its discretion— (AA) request that the parties to the transaction file a written notice under clause (i); (BB) inform the parties to the transaction that the Committee is not able to complete action under this section with respect to the transaction on the basis of the declaration and that the parties may file a written notice under clause (i) to seek written notification from the Committee that the Committee has completed all action under this section with respect to the transaction; (CC) initiate a unilateral review of the transaction under subparagraph (D)