What are three major classes of proteolytic enzymes secreted by the pancreas?Select one:
a. trypsinogen, chymotrypsinogen and (pro)carboxypeptidase
b. trypsinogen, chymotrypsinogen and amylase
c. chymotrypsinogen, lipase and amylase
d. trypsinogen, lipase and sucrase
e. chymotrypsinogen and (pro)carboxypeptidase and lipase
a