A promise made in the singular number but executed by several persons is presumed to be joint and several.
S.D. Codified Laws § 53-2-5
Promise in singular number--Execution by several persons
Source: CivC 1877, § 951; CL 1887, § 3575; RCivC 1903, § 1269; RC 1919, § 890; SDC 1939, § 10.0105.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.