b. 27-32
In these bars Chopin would consistently put accidentals in A (→FE) only next to the bottom notes of the L.H. octaves (or not at all, as is the case with the 2nd crotchet in b. 27-28). Moreover, in b. 32 the lowering c1 to c1 was crossed out in A! In FC Fontana added only 4 naturals concerning c1, while GE and EE contain all necessary accidentals.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources; Source & stylistic information
issues: EE revisions, Accidentals in different octaves, GE revisions, Deletions in A, Fontana's revisions, Inaccuracies in A, Errors repeated in FE
notation: Pitch