FE feature an erroneous f
on the 2nd quaver, which can be considered a result of an oversight of a 
before this note or a Terzverschreibung error. Oversights of marks in such situations are very frequent in Chopin's, and not only, works, hence we adopt the version with f
as the text of FE (in the version "editors"). FE was interpreted in the same way in EE; a was added also in FEH. This prescriptive, "routine" addition, however, does not take into consideration a broader context – the accompaniment structure in bars 71-76 clearly indicates a Terzverschreibung error, hence a d note. Such an interpretation was adopted in GE; it is also confirmed by the correction in FES. According to us, the entry in FEH does not have to mean that Chopin paid attention to this place – the mistake is so blatant that the pupil could have introduced the correction by herself still before presenting this movement to the composer.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: Annotations in teaching copies, EE revisions, Errors in FE, Terzverschreibung error, GE revisions, Annotations in FES, Annotations in FEH
notation: Pitch