25-, 28-, and 33-percent rate brackets
The tables under subsections (a), (b), (c), (d), and (e) shall be applied—
(A) by substituting “25%” for “28%” each place it appears (before the application of subparagraph (B)),
(B) by substituting “28%” for “31%” each place it appears, and
(C) by substituting “33%” for “36%” each place it appears.