When either party to a contract of sale has an option as to the time, place, or manner of delivery, the party shall give the other party reasonable notice of the party's choice. If the party does not give notice within a reasonable time, the right of option is waived.
Mont. Code Ann. § 30-11-206
Notice of election as to delivery
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.