A Cell of the Pancreas Possesses Specific Proteins That Bind

A cell of the pancreas possesses specific proteins that bind secretin. Which of the following is the correct response to that statement?

A) these are peripheral proteins and result in the release of glucagon
B) they are peripheral proteins and result in the release of insulin
C) these are integral proteins and result in the release of an enzyme-rich fluid
D) these are integral proteins and result in the release of an enzyme-poor fluid
E) they are integral proteins and result in the secretion of pancreatic polypeptide