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Which of the following statement(s) is/are correct regarding cockroaches ?
  1. The body of the cockroach is segmented and divisible into three distinct regions head, thorax and abdomen.
  2. Blood vascular system is of closed type.
  3. They are monoecious and both sexes have well developed reproductive organs.
  4. The development of P. americana is paurometabolus, meaning there is development through nymphal stage.

A. Both (i) and (ii)

B. Both (ii) and (iii)

C. Both (i) and (iv)

D. All of these

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