Which of the following statement$(s)$ is/are correct regarding cockroaches?
$(i)$ The body of the cockroach is segmented and divisible into three distinct regions - head,thorax and abdomen.
$(ii)$ Blood vascular system is of closed type.
$(iii)$ They are monoecious and both sexes have well developed reproductive organs.
$(iv)$ The development of $P. americana$ is paurometabolous,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