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# Smallpox is due to

$\begin{array}{1 1}(A)\;\text{Virus}\\(B)\;\text{Bacterium}\\(C)\;\text{Helminth}\\(D)\;\text{Protozoan}\end{array}$

Can you answer this question?

Smallpox is due to virus
Hence (A) is the correct answer.
answered Jul 14, 2014