(1) Except as otherwise provided in Subsection 75A-5-309(2)(a), a unitrust rate may be:
(a) a fixed unitrust rate; or
(b) a unitrust rate that is determined for each period using:
(i) a market index or other published data; or
(ii) a mathematical blend of market indices or other published data over a stated number of preceding periods.
(2) Except as otherwise provided in Subsection 75A-5-309(2)(a), a unitrust policy may provide:
(a) a limit on how high the unitrust rate determined under Subsection (1)(b) may rise;
(b) a limit on how low the unitrust rate determined under Subsection (1)(b) may fall;
(c) a limit on how much the unitrust rate determined under Subsection (1)(b) may increase over the unitrust rate for the preceding period or a mathematical blend of unitrust rates over a stated number of preceding periods;
(d) a limit on how much the unitrust rate determined under Subsection (1)(b) may decrease below the unitrust rate for the preceding period or a mathematical blend of unitrust rates over a stated number of preceding periods; or
(e) a mathematical blend of any of the unitrust rates determined under Subsection (1)(b) and Subsections (2)(a) through (d).