Which statement about the relationship between peptic ulcers and the bacterium Helicobacter pylori (H. pylori) is correct?
a. H. pylori does not respond to antibiotics to treat peptic ulcers.
b. H. pylori causes an increased production of hydrochloric acid
c. Patients with Peptic ulcers caused by H. pylori are more prone to develop gastric cancer
d. H. pylori bacteria produce enzymes that weaken the protective mucus in the stomach
e. Patients with H. pylori are at increased risk for repeated episodes of peptic ulcers
