Which of the following statements is not correct?

  • A
    The six carbons in benzene are $sp^2$ hybridised
  • B
    Benzene has $(4n+2) \pi$ electrons
  • C
    Benzene undergoes substitution reactions
  • D
    Benzene has two carbon-carbon bond lengths,$1.54 \mathring{A}$ and $1.34 \mathring{A}$

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