[TUHS] ANSI (C) vs IEEE (POSIX) Standards Body Selection

[segaloco via TUHS]

Good morning, I was wondering if anyone has the scoop on the rationale behind the selection of standards bodies for the publication of UNIX and UNIX-adjacent standards.  C was published via the ANSI route as X3.159, whereas POSIX was instead published by the IEEE route as 1003.1.  Was there every any consideration of C through IEEE or POSIX through ANSI instead?  Is there an appreciable difference suggested by the difference in publishers?  In any case, both saw subsequent adoption by ISO/IEC, so the track to an international standard seems to lead to the same organizations.

- Matt G.