Question

Tautomerism is net exhibited by:

• A. A
• B. B
• C. C
• D. D

Hint:

Tautomerism involves the equilibrium between two isomers, often involving a shift of a proton or rearrangement of a double bond.

Answer 1

The Correct Option is A

Tautomerism is a form of isomerism where two isomers can interconvert through the transfer of a proton or rearrangement of electrons, typically in compounds with a keto-enol type relationship.
Final Answer: \[ \boxed{\text{CH}_2 = \text{CH} - \text{OH}} \]