21(1)Section 76A shall be amended as follows.
(2)In subsection (1) (power to vary the sums stated in specified provisions)—
(a)for “74(1)” there shall be substituted “74(1)(a), (b), (c) or (d)”; and
(b)after “75(1) above” there shall be inserted “, a sum prescribed under section 75(1B)(a) above”.