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A hydroxy acid on heating gives a 5-membered lactone. The acid is

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A hydroxy acid on heating gives a 5-membered lactone. The acid is
A. `CH_(2)OHCH_(2)CH_(2)COOH`
B. `CH_(3)CHOHCH_(2)COOH`
C. `CH_(3)CH_(2)CHOHCOOH`
D. `CH_(3)CHOHCHOHCOOH`
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Correct Answer - A
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