During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process$\text{Proteins}\stackrel{\text{Enzyme (A)}}{\to }\text{Polypeptides}\stackrel{\text{Enzyme (B)}}{\to }\text{Amino acids}$, are respectively:

In the digestive system, pepsin (secreted in the stomach) initiates the breakdown of proteins into smaller polypeptides/peptones. Trypsin (from the pancreas) and subsequent peptidases further cleave these polypeptides into individual amino acids. Among the given choices, pepsin and trypsin are the only proteolytic enzymes.