Which of the following is the most likely cause of pancreatic tissue damage that leads to acute pancreatitis?
a. Overproduction of pancreatic enzymes, causing the tissues to autodigest
b. Obstruction of pancreatic juice outflow by gallstones, leading to autodigestion of pancreatic cells
c. Autoimmune disorders attacking the pancreatic tissues
d. Overproduction of gastric hormones, leading to excessive stimulation of pancreatic cells