Except as provided in subsection (b) of this section, if in any contract year the gross premium charged by an insurer on a policy or contract is less than the valuation net premium for the policy or contract, the minimum reserve required for the policy or contract is the greater of: the reserve calculated according to the mortality table, interest rate, and method actually used for the policy or contract; or the reserve calculated by using the method actually used for the policy or contract, but: using the minimum valuation standards of mortality and of interest in §§ 5-304 and 5-306 of this subtitle; and in each contract year for which the valuation net premium exceeds the actual gross premium, using the actual gross premium instead of the valuation net premium. Except as provided in subparagraph (ii) of this paragraph, for purposes of paragraph (1) of this subsection, the valuation net premium for a policy or contract shall be calculated by the method used in calculating the reserve on the policy or contract using the minimum valuation standards of mortality and interest rate under §§ 5-304 and 5-306 of this subtitle. For future renewals under a renewable term insurance policy, the modern CSO mortality table published in The Transactions of The Society of Actuaries, Vol. XXVII (1975), shall be used instead of the minimum valuation standard of mortality under § 5-304 of this subtitle. If the gross premium rates for a policy or contract are not based consistently on a suitable accepted or credible mortality basis or table, the Commissioner may require additional reserves in accordance with § 5-103(3) of this title. For a life insurance policy described in § 5-307(a)(3)(ii) of this subtitle: subsection (a) of this section shall be applied substituting the method described in § 5-307 of this subtitle, without regard to § 5-307(a)(4)(iii), for the method actually used in calculating the reserve for the policy; and the minimum reserve at each policy anniversary of the policy shall be the greater of: the minimum reserve calculated under § 5-307 of this subtitle, including § 5-307(a)(4)(iii); or the minimum reserve calculated under this section.