Which of the Following Statements Best Explains the Reason Why

Multiple Choice

Which of the following statements best explains the reason why pepsin does not digest the proteins found in the stomach's own cells?

A) Pepsin can only recognize and digest proteins in food.
B) Pepsin is released in an inactive form that is then activated by HCl in the stomach lumen.
C) Pepsin is released in an inactive form that is then activated by enterokinsase in the stomach lumen.
D) Pepsin digests starches not proteins.
E) Pepsin is not active until it reaches the alkaline pH conditions of the small intestine.