Match the items in Column-$I$ with the appropriate units in Column-$II$.

Column-$I$	Column-$II$
$(1)$ Distance between Earth and stars	$(a)$ Kilometer
$(2)$ Wavelength of infrared radiation	$(b)$ Light-year
	$(c)$ $\mathring{A}$

(B) $(1)$ The distance between Earth and stars is extremely large, so it is measured in light-years $(ly)$. Thus, $(1-b)$.
$(2)$ The wavelength of infrared radiation is very small, typically in the range of micrometers to nanometers, which is conveniently expressed in $\mathring{A}$s. Thus, $(2-c)$.