Given below is assertion and reason.
A. Both assertion and reason are true with reason being the correct explanation
B. Both assertion and reason are true but reason not correct explanation
C. Assertion is true, but reason is wrong
D. Both assertion and reason are wrong

Assertion: Shigella species, E.coli and Salmonella species are all known to be the causes of diarrhoeal diseases.
Reason: Shigella, E.coli and Salmonella are intestinal parasites.

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Solution

The correct option is A A
Shigella species, E.coli and Salmonella species are intestinal parasites and cause diseases in the intestine. Intestinal parasites cause diarrhoea due to inflammation and ulceration of intestinal mucosa. Infections of the intestine result in diarrhoea or dysentery, nausea, vomiting, and abdominal cramping.

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