$A$ solution of cyclohexene in benzene is stirred at $0 \ ^oC$ while concentrated sulphuric acid is added. After washing away the acid and removing the excess benzene,what product is isolated?

  • A
    cyclohexylbenzene
  • B
    $1-$cyclohexylcyclohexene
  • C
    $trans-1,2-$diphenylcyclohexane
  • D
    $1,1-$diphenylcyclohexane

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