$7.$ How can one increase the yield of carbon dioxide in the following reaction?

$2$ CO$($g$)+$ O$2($g$)2$ CO$2($g$)\backslash$Delta H $=-564$ kJ

A$.$ decreasing the concentration of CO$($g$)$

B$.$ decreasing pressure

C$.$ increasing the volume of the container

D$.$ decreasing temperature

E$.$ application of a catalyst