Can anyone answer this q please!?

Question

if a person suffers from fluids back flowing from he small intestine into the stomach or from erratic or premature discharge of thee stomach contents into the small intestine chances are there is some defect or disease involving the---------

A-pyloric sphincter

b- Sphincter of oddi

C-hepatic duct

c-mesentry

Answer 1

Methinks this should be in the medical section.

Answer 2

Pyloric sphincter.  The pyloric sphincter is a ring of muscle at the bottom of the stomach that controls flow from the stomach to the intestines.