The correct order of steps occurring in nutrition in animals is:

• A
  Ingestion $\rightarrow$ Absorption $\rightarrow$ Digestion $\rightarrow$ Assimilation $\rightarrow$ Egestion.
• B
  Ingestion $\rightarrow$ Digestion $\rightarrow$ Assimilation $\rightarrow$ Absorption $\rightarrow$ Egestion.
• C
  Ingestion $\rightarrow$ Digestion $\rightarrow$ Absorption $\rightarrow$ Assimilation $\rightarrow$ Egestion.
• D
  Ingestion $\rightarrow$ Assimilation $\rightarrow$ Digestion $\rightarrow$ Absorption $\rightarrow$ Egestion.