How to obtain dry ice.

Question

$\begin{array}{1 1} \text{(a)Dry ice is made from carbon monoxide gas.} \\ \text{(b)Dry ice is made from carbon dioxide gas.} \\ \text{(c) Dry ice is made from Oxgen gas.} \\ \text{(d) Dry ice is made from Nitrogen dioxide gas.}\end{array}$