Which of the following is the correct statement about the circulatory system of a cockroach?

  • A
    It is a closed type of circulatory system.
  • B
    It is a complicated type of circulatory system.
  • C
    It takes place without the participation of tissue.
  • D
    It has a $13$-chambered heart and in each segment,one pair of ostia is present.

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