(a) The Board shall act on a claim presented in accordance with the rules within 45 days after the claim has been presented or, if the claim is amended, within 45 days after the amended claim is presented.

(b) Automatic Rejection. If the claim is not acted on by the Board within the time prescribed in this Section, the claim will be deemed rejected by the Board on the last day of the period within which the Board is required to act on the claim.

(c) Extension of Time. By written agreement, the claimant and the Board may extend the period within which the Board is required to act on the claim.

(d) The Board may reject any claim which, due to its complexity, the Board determines is beyond its ability to investigate. Notice of the Board's action shall be given in accordance with Government Code Section 915.4.

(e) All claims submitted by inmates of a State adult correctional facility, juvenile correctional facility, or county jail which are compliant with Government Code Section 911.2 may be presumed to be complex and may be rejected by the Board.

(f) The Board may, within the time prescribed by Section 945.6 for commencing an action on a claim, reconsider for purposes of settlement an allowed or partially allowed claim if the claimant rejects the amount allowed by the Board.