A
compare
The missing 
mark must be Fontana's mistake.
The crossing-out visible in A proves that Chopin initially entered that mark before the f3-f4 octave.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations; Source & stylistic information
issues: Corrections in A, Deletions in A, Errors of FC
notation: Verbal indications