Which of the following is the most important approach in healing peptic ulcers?

A、Neutralizingsecretedgastricacid;
B、Blockingreceptoractivationofgastricacidsecretion;
C、Inhibitingsecretionofgastricacidattheprotonpump;
D、EradicatinginfectionwithH.pylori;
E、Coatingtheulcercrater