Spermathecal pores of $Pheretima$ are present in

  • A
    $5/6, 6/7, 7/8$ and $8/9$
  • B
    $6/7, 7/8, 8/9$ and $9/10$
  • C
    $1/2, 2/3, 3/4$ and $4/5$
  • D
    $14/15, 15/16, 16/17$ and $17/18$

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