Payment of Charges (a) Subject to Section 5.2(b), each Credit Party shall pay and discharge or cause to be paid and discharged promptly all Charges payable by it, including (i) Charges imposed upon it, its income and profits, or any of its property (real, personal or mixed) and all Charges with respect to tax, social security and unemployment withholding with respect to its employees, (ii) lawful claims for labor, materials, supplies and services or otherwise, and (iii) all storage or rental charges payable to warehousemen and bailees, in each case, before any thereof shall become past due. (b) Each Credit Party may in good faith contest, by appropriate proceedings, the validity or amount of any Charges, Taxes or claims described in Section 5.2(a); provided, that (i) adequate reserves with respect to such contest are maintained on the books of such Credit Party, in accordance with GAAP; (ii) no Lien shall be imposed to secure payment of such Charges (other than payments to warehousemen and/or bailees) that is superior to any of the Liens securing payment of the Obligations and such contest is maintained and prosecuted continuously and with diligence and operates to suspend collection or enforcement of such Charges, (iii) none of the Collateral becomes subject to forfeiture or loss as a result of such contest, (iv) such Credit Party shall promptly pay or discharge such contested Charges, Taxes or claims and all additional charges, interest, penalties and expenses, if any, and shall deliver to Agent evidence reasonably acceptable to Agent of such compliance, payment or discharge, if such contest is terminated or discontinued adversely to such Credit Party or the conditions set forth in this Section 5.2(b) are no longer met, and (v) Agent has not advised Borrower in writing that Agent reasonably believes that nonpayment or nondischarge thereof could have or result in a Material Adverse Effect.