It is hard to state which of the sources guessed the sense of the notation of [A] more accurately. It is highly likely that even seeing the autograph, we would not be sure how to assign the 
sign, as in the case of the lower placed notes, Chopin would often put these signs before the note and not under it, which sometimes resulted in ambiguities. In the discussed bar, both pedalling versions are possible; to the main text we adopt the less schematic version. The absence of 
in GC is a patent oversight.
Similarly in bar 159.
Compare the passage in the sources »
category imprint: Differences between sources
notation: Pedalling
