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Preparation of Poly(vinyl alcohol)

Poly(vinyl alcohol), ~[CH2CH(OH)CH2CH(OH)CH2CH(OH)]~ is a unique polymer, having a high affinity for water. Which of the following procedures would be most suitable for its preparation?
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A Radical-chain polymerization of CH2=CHCH2OH.
B Radical-chain polymerization of CH2=CHOH.
C Radical-chain polymerization of CH2=CHCO2CH3, followed by base-catalyzed hydrolysis.
D Radical-chain polymerization of CH2=CHOCOCH3, followed by base-catalyzed hydrolysis.

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