Which of the following is a correct sequence for the appearance of compounds in a cell?

• A
  Amino acids $\rightarrow$ protein $\rightarrow$ enzyme
• B
  Protein $\rightarrow$ enzyme $\rightarrow$ amino acids
• C
  Disaccharides $\rightarrow$ monosaccharides $\rightarrow$ polysaccharides
• D
  Monosaccharides $\rightarrow$ starch $\rightarrow$ sucrose