Identify the allylic halide (or the one that is not)

1. A.
   CH₂=CH-CH₂-X
2. B.
   CH₃-CH=CH-CH₂-X
3. C.
   CH₃-CH₂-CH=CH-CH₂-X
4. D.
   CH₃-CH=CH-CH₂-CH₂-X

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1. A.
   CH$_3$–CH$_2$–CH$_2$–X
2. B.
   C$_6$H$_5$–CH$_2$–X
3. C.
   CH$_2$=CH–CH$_2$X
4. D.
   CH$_2$–CH=CH–X

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1. A.
   1-Bromopropene
2. B.
   2-Bromopropene
3. C.
   3-Bromopropene
4. D.
   4-Bromobut-1-ene

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1. A.
   ${CH}_{2} = CH - {CH}_{2} - X$
2. B.
   ${CH}_{3} - CH = CH - {CH}_{2} - X$
3. C.
   ${CH}_{3} - {CH}_{2} - CH = CH - {CH}_{2} - X$
4. D.
   ${CH}_{3} - CH = CH - {CH}_{2} - {CH}_{2} - X$

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1. A.
   $\mathrm{CH_3 - CH_2 - CH_2 - X}$
2. B.
   $\mathrm{C_6H_5 - CH_2 - X}$
3. C.
   $\mathrm{CH_2 = CH - CH_2 - X}$
4. D.
   $\mathrm{CH_3 - CH = CH - X}$

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1. A.
   $\mathrm{CH_3 - CH_2 - CH_2 - X}$
2. B.
   $\mathrm{C_6H_5CH_2 - X}$
3. C.
   $\mathrm{CH_2 = CH - CH_2 - X}$
4. D.
   $\mathrm{CH_3 - CH = CH - X}$

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