MCQ
Select incoorect statement about $P_2$


- A$P_2$ is a spiro compound
- B$P_2$ is cyclic ketone
- C$P_2$ is has $3$ degree of unsaturation
- ✓$P_2$ is a bicyclo hydrocarbon

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$[Figure]$ $\xrightarrow{{{H^ + }/H{g^{2 + }}}}A$
the product '$ A'$ is