A commitment for title insurance is an Underwriter's offer to issue a title policy to the proposed insured upon payment of the premium and other charges due, subject to the exceptions and requirements in Schedule "B" and Schedule "C" and subject to the Policy's Conditions and Stipulations. In order for the commitment to be valid, the proposed insured's name and the policy amount must be shown in Schedule "A", and an authorized representative must countersign the jacket. The commitment expires ninety (90) days from the effective date of the commitment unless the policy is issued or should have been issued sooner, and the company's liability and obligations end when the commitment expires