The As version with a dotted rhythm in the upper voice was most likely changed by Chopin already in [A] (→FE→GE,EE). However, in bar 24, the first note (g1) was probably remade from a minim to a dotted crotchet, which means that in this bar Chopin changed his mind twice, ultimately returning to the first idea (minim).
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
issues: Chopin's hesitations, Main-line changes
notation: Rhythm