Which of the following secretions has a very high pH?

Gastric juice is acidic with a pH varying from 1to2. -Pancreatic juice is alkaline with a pH ranging from 7.8-8.4 Gallbladder bile is alkaline & pH is ranging from 7-7.6 -pH of saliva varies from 6-7.4 & is slightly acidic. Reference: Medical Physiology, Indu Khurana