Identify the correct sequence of organs in the digestive system of an earthworm.

• A
  Mouth $\rightarrow$ Pharynx $\rightarrow$ Oesophagus $\rightarrow$ Stomach $\rightarrow$ Gizzard $\rightarrow$ Intestine
• B
  Mouth $\rightarrow$ Pharynx $\rightarrow$ Oesophagus $\rightarrow$ Gizzard $\rightarrow$ Stomach $\rightarrow$ Intestine
• C
  Mouth $\rightarrow$ Gizzard $\rightarrow$ Pharynx $\rightarrow$ Oesophagus $\rightarrow$ Stomach $\rightarrow$ Intestine
• D
  Mouth $\rightarrow$ Oesophagus $\rightarrow$ Pharynx $\rightarrow$ Stomach $\rightarrow$ Gizzard $\rightarrow$ Intestine