Answer:
Peptic ulcer are the open sores which form inside the lining of the stomach and in the upper portion of the small intestine.
The stomach pain is most common symptom of this disease. It is not caused by spicy food and stress.
It is caused by the infection of bacterium Helicobacter pylori and it cam also be caused due to long term intake of the non steroidal anti inflammatory drug.
The risk is person should not take spicy food once he is detected by this disease and should discontinue the drugs causing this disease.
B) A node would be introduced.
This would be used to help provide distinctions to these species
B, proton is positive and it does not represent the symbol
