The version of A is most probably a Terzverschreibung, which would often happen to Chopin with a larger number of ledger lines – cf., e.g. the Polonaise in C
minor, Op. 26 No. 1, b. 5 or the Concerto in F minor, Op. 21, II mov., b. 83. Chopin corrected it twice while proofreading FE – FE1 includes c4, and it is only just FE2 and the remaining editions that include b
3.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Errors in FE, Terzverschreibung error, Errors in the number of ledger lines, Errors of A, Authentic corrections of FE
notation: Pitch
