Section 11
SEC. 11. The Grantee shall keep a separate account of the gross receipts of business transacted by it in the Philippines and shall furnish the Commission on Audit with a copy of such account not later than the last day of February of each year for the preceding year. For the purpose of auditing the accounts surrendered to the Commission on Audit, all the books and accounts of the Grantee, or duplicates thereof, so far as they relate to the business transacted in the Philippines, shall be subject to the official inspection of the Commission on Audit or his authorized representatives, and the audit or approval of such accounts shall be final and conclusive evidence as to the amount of said gross receipts, except that the Grantee shall have the right to appeal to the Courts of the Philippines, under the terms and conditions provided in the laws of this country.