(1) Reserves for any category of policies or benefits as established by the commissioner may be calculated, at the option of the company, according to any standards that produce greater aggregate reserves for the category than those calculated according to the minimum standard provided in this part 3, but the rate or rates of interest used for policies and contracts, other than annuity and pure endowment contracts, must not be greater than the corresponding rate or rates of interest used in calculating any nonforfeiture benefits provided for in the policies or contracts.
(2) Any company that at any time has adopted any standard of valuation producing greater aggregate reserves than those calculated according to the minimum standard provided in this part 3 may adopt a lower standard of valuation with the approval of the commissioner, but not lower than the minimum provided in this part 3; except that, for the purposes of this part 3, the holding of additional reserves previously determined by the appointed actuary to be necessary to render the opinion required by section 10-7-114 shall not be deemed to be the adoption of a higher standard of valuation.