Which among the followings is an allylic halide?

Which among the followings is an allylic halide?
  1. 1-Chloropropene
  2. 2-Chloropropene
  3. 3-Chloropropene
  4. 2-Bromopropane

Asked in: MHT CET 2021 (24 Sep Shift 1)

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