Which disease in tobacco was identified by $D.J. Ivanowsky$ as being caused by viruses?

Assertion $(A)$: The capsid of a virus is made up of many small subunits called capsomeres.
Reason $(R)$: Viruses exhibit active and living behavior in a virus-free state.

Match List-$A$ and List-$B$ and choose the correct option.

List-$A$	List-$B$
$(a)$ Citrus canker	$(i)$ Fungi
$(b)$ Spongiform encephalopathy	$(ii)$ Prion
$(c)$ Herpes	$(iii)$ Virus
$(d)$ Red rot	$(iv)$ Bacteria

In lichens,a symbiotic association is found between algae and fungi. The fungus . . . . . . .

Bacteriophages are usually $...$

Match the column $I$ with column $II$:

Particles/Microorganisms	Diseases
$(i)$ Viroid	$(a)$ $\text{CJD}$
$(ii)$ Virus	$(b)$ Citrus canker
$(iii)$ Bacteria	$(c)$ Potato spindle tuber disease
$(iv)$ Prion	$(d)$ Mumps