Where the Board of Supervisors fails to render a decision within the required 45 days or fails to commence, conduct or complete the required hearings as specified in Subsection A(3) and (4) above, the decision shall be deemed to have been rendered in favor of the applicant, unless the applicant has agreed, in writing, or on the record, to an extension of time. When a decision has been rendered in favor of the applicant because of the failure of the Board of Supervisors to meet or render a decision as provided herein, the Board of Supervisors shall give public notice, as defined herein, of said deemed approval within 10 days from the last day it could have met to render a decision. If the Board of Supervisors shall fail to provide such notice, the applicant may do so. Nothing in this subsection shall prejudice the right of any party opposing the application to appeal the decision to a court of competent jurisdiction.