(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.