As far as I know #2 and #3 are equally plausible, and there is no evidence for one over the other. Many web sites claim that #3 can be ruled out because there are no horseshoe bats within hundreds of miles of Wuhan, and they are not sold at the wet market. However all of these go back ton one single report, purportedly by someone in China, that made this claim. I know of no way to verify it, so one shouldn’t put too much trust in it.
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