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(B) The reaction involves the dehydrogenation of the precursor using $Pd/C$ at high temperature $(\Delta)$.This process aromatizes the rings to form t

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(B) The reaction involves the dehydrogenation of the precursor using $Pd/C$ at high temperature $(\Delta)$.This process aromatizes the rings to form the stable,bowl-shaped aromatic hydrocarbon known as corannulene $(C_{20}H_{10})$.Corannulene consists of a central five-membered ring fused to five six-membered rings.Option $B$ correctly represents the structure of corannulene with the central five-membered ring and the surrounding aromatic six-membered rings.

The step shown below is a recent synthesis of corannulene. Product $A$ is

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