Which of the following catalyst is used in the conversion of water gas and hydrogen into methyl alcohol?

Water gas is an equimolar mixture of $CO$ and $H_2$.

A mixture of  zinc oxide and chromium oxide $(ZnO-C{r}_2{O}_3)$ converts water gas into methanol $(C{H}_{3}OH)$.

The temperature of the reaction is 573 K. 

$CO+H_2\stackrel{ZnO-C{r}_2{O}_3}{\to }C{H}_{3}OH$

Option D is correct.