An obligation which requires the performance of one of two acts at the option of a party is an alternative obligation. The party required to perform has the right of selection unless the terms of the obligation otherwise provide.
S.D. Codified Laws § 20-3-1
Alternative obligation defined--Right of selection
Source: CivC 1877, § 813; CL 1887, § 3436; RCivC 1903, § 1129; RC 1919, § 736; SDC 1939, § 47.0113.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.