Which Type of Laxatives Act as Local Irritants to the Colonic

Which type of laxatives act as local irritants to the colonic tissue?

A) stimulant
B) osmotic
C) stool surfactant agents
D) bulk-forming agents
Use the following case study to answer questions 56-61.
Kati is a 27-year-old Caucasian who works as a bank teller.She is 5'3" tall and weighs 102 pounds.She began experiencing recurrent gastrointestinal disturbances such as diarrhea, steatorrhea, and flatulence several months ago.She made an appointment with her physician after noticing that she was losing weight.Laboratory tests confirmed a diagnosis of celiac disease.