In the electron transport system during tissue respiration,the role of cytochrome oxidase is

  • A
    As the final acceptor of $2$ electrons which activate ${O_2}$ to form $CO_2$
  • B
    In accepting $2$ electrons to be transported to the other cytochromes
  • C
    As final acceptor of $2$ electrons to form water
  • D
    As final acceptor of an electron to form water

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