Which of the following statements is correct regarding the female reproductive system of an earthworm?

• A
  It consists of two large ovaries,lying laterally in the $6^{th}-7^{th}$ abdominal segments.
• B
  Each ovary is formed of a group of five ovarian tubules or ovarioles,containing a chain of developing ova.
• C
  $A$ pair of spermatheca is present in the $5^{th}$ segment which opens into the genital chamber.
• D
  None of the above