Regarding blood circulation,it may be said that in $Pheretima$,the dorsal vessel is a:

  • A
    Collecting vessel in first two segments and distributing vessel in other
  • B
    Distributing vessel in first five segments and collecting vessel in other
  • C
    Collecting vessel in first thirteen segments & distributing vessel in intestinal region
  • D
    Distributing vessel in first thirteen segments & collecting vessel in intestinal region

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