Which of the following compounds can show tau | vedclass

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(D) For a compound to show keto-enol tautomerism,it must have at least one $\alpha$-hydrogen atom adjacent to the carbonyl group $(C=O)$.$(A)$ The str

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$Ph-CO-CH_3$

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(D) For a compound to show keto-enol tautomerism,it must have at least one $\alpha$-hydrogen atom adjacent to the carbonyl group $(C=O)$.$(A)$ The structure shown in the image (cyclobut$-2-$ene$-1,2-$dione) has no $\alpha$-hydrogen atoms.$(B)$ The structure shown in the image (camphor derivative) does not show tautomerism due to Bredt's rule,which prevents the formation of a double bond at the bridgehead position.$(C)$ $Ph-CO-Ph$ (Benzophenone): Both $\alpha$-carbons are part of benzene rings and have no hydrogens.$(D)$ $Ph-CO-CH_3$ (Acetophenone): It has three $\alpha$-hydrogens on the methyl $(-CH_3)$ group. Therefore,it can show tautomerism.

Which of the following compounds can show tautomerism?

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