I don't think there is any. But the answers may tell us two interesting things: (i) when two answers are the same, more people pick the first than the second; (ii) even when people know only one item on the list can be right, a few will still pick one of a pair of duplicate entries. Of course the number of responses that pick one of those two (only about 60 so far) may be so small that it doesn't reliably tell us anything.

Actually, I suspect that one of those was a typing error on my part and should have been 5,3,2. But I'm not sure - I was trying to complicate things at the time and two equal options might have struck me as an amusing complication, although I don't remember it.