If a trustee determines that an allocation between principal and income required by section 3359, 3360, 3361, 3362, or 3365 of this title is insubstantial, the trustee may allocate the entire amount to principal unless one of the circumstances described in subsection 3324(c) of this title applies to the allocation. This power may be exercised by a cotrustee in the circumstances described in subsection 3324(d) of this title and may be released for the reasons and in the manner described in subsection 3324(e) of this title. An allocation is presumed to be insubstantial if:
14 V.S.A. § 3358