Pathology All India exam 89bd391a Which of the following statements is true of cholera enterotoxin? A Appears to produce its effect by stimulating adenyl cyclase activity in mucosal cells B Causes destruction of the intestinal mucosa allowing for invasive infection C Causes a net efflux of ions and water from tissue into the lumen of the large intestine D Is a protein with a molecular weight of about 284,000 High-Yield Explanation .