Explanation:

Pancreas gland works both as endocrine and exocrine gland, because it is a glanduar organ in the upper abdomen, but really it serves as two glands in one : a digestive exocrine gland and hormone - producing endocrine gland functioning as an exocrine gland , the pancreas excretes enzymes to breakdown the proteins. Pancreas are exocrine glands because they secrete products like  pancreatic juice into the gastrointestinal tract through a series of ducts. and they are Endocrine because hormones like insulin and glucagon direct into bloodstream. Hence option 3rd is correct.