when blood glucose levels rises,the pancreas secretes insulin,and as a result blood result glucose level declines. when blood glucose levels is low, the pancreas secretes glucagon, as a result blood glucose levels rises. such regulation of blood glucose levels is the of

A) protein-protein interactions
B)catalytic feedback
C)negative feedback
D)positive feedback

when blood glucose levels risesthe pancreas secretes insulinand as a result blood result glucose level declines when blood glucose levels is low the pancreas se class=