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(C) The reaction of the given bicyclic diene with $CHCl_3$ and $KOH$ generates dichlorocarbene $(:CCl_2)$,which undergoes a $[2+1]$ cycloaddition foll

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(C) The reaction of the given bicyclic diene with $CHCl_3$ and $KOH$ generates dichlorocarbene $(:CCl_2)$,which undergoes a $[2+1]$ cycloaddition followed by ring expansion to form an aromatic system. This process is known as the $Doering-LaFlamme$ type ring expansion. In the first step,the addition of $:CCl_2$ to one of the double bonds followed by rearrangement leads to the formation of a chloronaphthalene derivative $(A)$. In the second step,the addition of another equivalent of $:CCl_2$ to the remaining double bond followed by rearrangement leads to the formation of a dichloronaphthalene derivative $(B)$. The final product $(B)$ is $2,6$-dichloronaphthalene.

The product $(B)$ is:

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