Of the following diseases given below, how many of them are caused by viruses?
Mumps, Smallpox, Herpes, Citrus canker, Red rot of sugarcane, Tobacco mosaic
A
Six
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B
Four
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C
Five
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D
Two
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Solution
The correct option is B Four Mumps, smallpox, herpes and tobacco mosaic disease are caused by viruses.
Citrus canker is caused by bacteria.
Red rot of sugarcane is caused by fungi.