licensee’s response presents a substantial and material question of fact. (ii) Evidence and burdens In any case where a hearing is conducted under this paragraph, the hearing shall be based on written evidence only, and the burden of proceeding with the introduction of evidence and the burden of proof shall be on the licensee. (iii) Costs Unless the licensee substantially prevails in the hearing, the Commission may assess the licensee for the costs of such hearing. (D) Opportunity to pay prior to revocation Any Commission order adopted under this paragraph shall determine the amount due, if any, and provide the licensee with at least 30 days to pay that amount or have its authorization revoked. (E) Finality No order of revocation under this paragraph shall become final until the licensee has exhausted its right to judicial review of such order under section 402(b)(5). (g) Waiver, Reduction, and Deferment The Commission may waive, reduce, or defer payment of a fee, interest charge, or penalty in any specific instance for good cause shown, if such action would promote the public interest. (h) Payment rules The Commission shall by rule permit payment— (1) in the case of fees in large amounts, by installments