; and (ii) to complete the service in clause (i) not later than 10 years after the later of the date on which the eligible individual— (I) receives a doctoral or graduate degree in veterinary medicine under subsection (b)(2); and (II) enters into the agreement under subsection (a). (d) Preference In making payments under this section, the Secretary shall give preference to an eligible individual who— (1) holds or is pursuing a doctoral or graduate degree in veterinary medicine with a specialty in wildlife or zoological veterinary medicine; or (2) is currently practicing wildlife or zoological veterinary medicine. (e) Payments (1) In general Payments on behalf of an eligible individual under this section shall include payment of the principal and interest on the government loans of the eligible individual, to the extent that the loans cover such expenses as are determined by the Secretary to be associated with obtaining a doctoral or graduate degree in veterinary medicine under subsection (b)(2), including— (A) tuition expenses; (B) reasonable living expenses; and (C) all other reasonable educational expenses incurred by the grantee, including fees, laboratory expenses, and expenses for books and equipment. (2) Amount (A) In general Subject to the limitations in subparagraph (B), the Secretary shall develop regulations to determine the amounts of payments for each eligible individual under this section, considering factors including— (i) the degree held or pursued by the eligible individual; (ii) the training programs in which the eligible individual has participated; (iii) the total loan balance paid by the eligible individual; (iv) the extent to which such determination affects the ability of the Secretary to maximize the number of agreements that can be provided under this section from the amounts appropriated for such agreements