Identify the correct option to distinguish between the dorsal and ventral surfaces of an earthworm.
Ventral surface $\quad\quad\quad$ Dorsal surface

• A
  Presence of genital pores $\quad\quad$ Dark mid-dorsal line
• B
  Dark mid-dorsal line $\quad\quad$ Presence of genital pores
• C
  Mouth $\quad\quad$ Anus
• D
  Anus $\quad\quad$ Mouth