What is IUPAC name of the following compound?

What is IUPAC name of the following compound?

1. 4-Chloro-4-ethyl-3-methylbut-3-ene
2. 4-Chloro-3-methylhex-3-ene
3. 3-Chloro-4-ethylbut-3-ene
4. 3-Chloro-4-methylhex-3-ene

Asked in: MHT CET 2021 (24 Sep Shift 2)

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