During the process of digestion,the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process
$proteins$ $\xrightarrow{\text{enzyme } (A)} polypeptides$ $\xrightarrow{\text{enzyme } (B)} amino \ acids$,
are respectively

• A
  invertase and zymase
• B
  amylase and maltase
• C
  diastase and lipase
• D
  pepsin and trypsin