Notwithstanding any of the preceding provisions of this subsection other than paragraphs (3)(A), (3)(C), (3)(D), (4), and (5) (but subject to section 415(i)(2)(A)(ii) of this title ), the total monthly benefits to which beneficiaries may be entitled under sections 402 and 423 of this title for any month on the basis of the wages and self-employment income of an individual entitled to disability insurance benefits shall be reduced (before the application of section 424a of this title ) to the smaller of—

(A) 85 percent of such individual’s average indexed monthly earnings (or 100 percent of his primary insurance amount, if larger), or

(B) 150 percent of such individual’s primary insurance amount.