Utah Code § 78B-5-617: Writings bearing obvious alterations -- Explanation required.

(1) The party producing as genuine a writing which has been altered, or appears to have been altered after its execution in a part material to the question in dispute must account for the appearance of alteration.

(2) The party may show that the alteration:

(a) was made by another without the party's concurrence;

(b) was made with the consent of the parties affected by it;

(c) was otherwise properly or innocently made; or

(d) does not change the meaning or language of the instrument.

(3) An altered writing that a party cannot adequately explain under Subsection (2) is not admissible.