An answer to this question came up in the low quality posts review. Just having posted an answer here seems to be a bad idea, as the question itself is on hold.
That said, I could not find anything wrong with it. I found this meta post, suggesting it may have been flagged automatically, due to its length.
However, the question itself is an identification question. A poorly written, off-topic one (thus the 'on hold'), but the original asker has been able to confirm that the answer was not correct.
If an answer is undeniable incorrect, does this count as being 'low quality'? If not, is there any particular action we should take, or should it be left up to the community to down vote?