; (ii) begin to make broadband service available from the broadband network deployed using Rural Digital Opportunity Fund support not later than 1 year after the date on which the award under paragraph (1) is authorized; and (iii) meet all buildout obligations from the Rural Digital Opportunity Fund support not later than 3 years after the date on which the award under paragraph (1) is authorized. (B) Force majeure The Commission shall adopt rules under subsection (f)(1) to provide for the extension of a deadline under subparagraph (A) of this paragraph if an event outside the control of a qualified carrier prevents the qualified carrier from meeting the deadline. (3) Amount of award The amount awarded to a qualified carrier under paragraph (1) shall be proportional to the amount of Rural Digital Opportunity Fund support received by the qualified carrier. (e) Documentation required A qualified carrier that receives amounts under this section shall— (1) maintain appropriate documentation demonstrating the use of the amounts