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Which bacterium causes most stomach ulcers and is not killed by antacids?
AVibrio cholerae
BEscherichia coli
CHelicobacter pylori
DSalmonella typhi
Answer & Solution
Correct answer: C. Helicobacter pylori
Most ulcers are caused by Helicobacter pylori, and antacids only neutralize acid without killing this bacterium.
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