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It was so bad I could n't suspend disbelief . It was so bad I looked at myself afterwards and said " damn I could have been playing world of warcraft all day . " I was told today that you ca n't sneak up behind someone in a fight .

Question:
what may be some plausible effects of sneaking up on someone ?
Select from the following. I. It could make a person feel bad; II. It could trigger defensive or confrontational instincts; III. It could trigger remedial suspense; IV. It only occurs in games;