Yea, definitely read it wrong. I usually hate when answers are presented that way.
Best thing you can do is reread each answer carefully. In this case, the dead-giveaway is the CH2 bonded to the Cl. You know a CH2 can't be on the terminal end of anything, so there you go.
Just be aware of your answers. One of the things I picked up thru a lot of practice tests is that some of the answers are not presented the way you're use to seeing. Good catch on your part though