Which of the following is most stable form for the given structure, after rearrangement?

Which of the following is most stable form for the given structure, after rearrangement?

1. 
   
2. 
   
3. \(\mathrm{CH}_3-\underset{\oplus}{\mathrm{C}} \mathrm{H}-\mathrm{CH}_2-\mathrm{CH}_3\)
4. \(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\stackrel{\oplus}{\mathrm{C}} \mathrm{H}_2\)

Asked in: AP EAMCET 2020 (17 Sep Shift 1)

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