Which of the following is a secondary allylic alcohol

1. A.
   $\text{CH}_2\text{=CH-CH}_2\text{-OH}$
2. B.
   Structure (b)
3. C.
   $\text{CH}_3\text{-CH=CH-CH}_2\text{-OH}$
4. D.
   $\text{CH}_2\text{=CH-C(CH}_3)_2\text{-OH}$

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1. A.
   H$_2$C=CH-CH$_2$-OH
2. B.
   CH$_3$-CH=CH-CH$_2$-OH
3. C.
   Structure (c)
4. D.
   Structure (d)

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