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Arti noticed the following precaution related to prevention of spread of a disease on a Poster. (CTET Jan 2012)

I. Do not let water collect around you.

II. Keep water pots, coolers and tanks clean.

III. Spray oil if water has collected at some place.

IV. Use nets to protect yourself.

A) dengue and Japanese encephalitis

B) small pox and malaria

C) dengue and eye flu

D) typhoid and cholera