IUPAC name of a given structure

1. A.
   1-Methoxy-2,2-dimethylcyclobutane
2. B.
   1-Methoxy-4,4-dimethylcyclobutane
3. C.
   2-Methoxy-1,1-dimethylcyclobutane
4. D.
   2,2-Dimethylcyclobutoxymethane

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1. A.
   1-Iodo-1,3,4-trimethylhex-2-ene
2. B.
   2-Iodo-4,5-dimethylhept-3-ene
3. C.
   2-Iodo-5-ethyl-4-methylhex-3-ene
4. D.
   1-Iodo-4-ethyl-1,3-dimethylpent-2-ene

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1. A.
   3-Bromo-4-ethylbut-3-ene
2. B.
   3-Bromo-4-methylhex-3ene
3. C.
   4-Bromo-3-methylhex-3-ene
4. D.
   4-Bromo-4-ethyl-3-methylbut-3-ene

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