In A the only accidental in the part of the R.H. is the 
before the 3rd semiquaver (c2). In a proofreading of FE (→EE), Chopin also added a 
before the 2nd note (b1). It is probably a correction of the manuscript's inaccuracies, yet in this harmonic context the version with b
1 (b2) as a possible original version cannot be entirely excluded. The accidentals in the 2nd group of semiquavers are included only in GE (in A, in which the middle part of the bar is written – same as in the following bars – with the octave sign, a sign or signs were not necessary).
Compare the passage in the sources »
category imprint: Differences between sources
issues: EE revisions, GE revisions, Authentic corrections of FE
notation: Pitch