Statement A : Presence of HCl in stomach is essential for the process of digestion.Statement B : The main function of HCl is to provide the necessary H+ for the activation of pepsinogen into pepsin.

Hydrochloric acid helps your body to break down, digest, and absorb nutrients such as protein. It also eliminates bacteria and viruses in the stomach, protecting your body from infection. Low levels of hydrochloric acid can have a profound impact on the body's ability to properly digest and absorb nutrients. The main function of HCl is to provide the necessary H+ for the activation of pepsinogen into pepsin.