Unpleasantly surprised at the high number of incorrect answers:
Correct answers: 49% (196)
Incorrect answers: 51% (207)
Total attempts: 403
It's got a tlittle bit better:
Correct answers: 50% (524)
Incorrect answers: 50% (519)
But that's still pretty awful, isn't it?
I can understand some people falling for option 2 because they have never used or learned about identity insert so they don't spot the syntax error (or because they look at it too quickly and don't notice it), but how can anyone think 1 or 4 would be valid?