b. 91
The rhythmic division of the 4th beat of the bar is not certain in FE – the digit '5' is put over the fourth semiquaver (in the group of five). The correct digit was either inaccurately placed (the '5' describing the quintuplet should be over the 3rd note) or the engraver inserted the '5' by mistake instead of a '3' marking the last three semiquavers as a triplet. None of the pupils' copies includes hints on rhythm. In the main text, we adopt the first possibility, based on an assumption that the notation of FE, although inaccurate, does not contain a mistake. The version with quintuplet, written unambiguously, is present in GE and EE.
Compare the passage in the sources»
category imprint: Graphic ambiguousness; Differences between sources
issues: EE revisions, Inaccuracies in FE, GE revisions
notation: Rhythm