What is IUPAC name of the following compound?

What is IUPAC name of the following compound?
  1. 3 - Bromo - 4 - ethylbut - 3 - ene
  2. 3 - Bromo - 4 - methylhex - 3 - ene
  3. 4 - Bromo - 3 - methylhex - 3 - ene
  4. 4 - Bromo - 4 - ethyl - 3 - methylbut - 3 - ene

Asked in: MHT CET 2024 (02 May Shift 2)

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