Which of the following statements is FALSE?
a) Glucagon is synthesized in the A cells of the pancreatic islets of Langerhans.
b) Glucagon is a peptide – identical in all mammals – consisting of a single chain of 29 amino acids
c) Glucagon is extensively degraded in the liver and kidney as well as in plasma, and at its tissue receptor sites.
d) Half-life of glucagon is between 6 and 8 hours, which is similar to that of insulin