Which of the following on reaction with acid will produce $C{O}_2$?

The correct options are
C

Metal Carbonates

D

Metal Bicarbonate

Acid on reaction with a metal gives salt and hydrogen gas.

$Acid\left(aq\right)+Metal\left(s\right)\to Metalsalt\left(s\right)+H_2\left(g\right)$

Acids on reaction with base give salt and water.

$Acid\left(aq\right)+Base\left(aq\right)\to Salt\left(s\right)+H_{2}O\left(aq\right)$

Acids react with metal carbonates to give carbon dioxide, water and the metal salt.

$MetalCarbonate\left(s\right)+Acid\left(aq\right)\to Metalsalt\left(s\right)+C{O}_2\left(g\right)+H_{2}O\left(l\right)$

Acids react with metal bicarbonates to give carbon dioxide, water and the metal salt.

$MetalBicarbonate\left(s\right)+Acid\left(aq\right)\to Metalsalt\left(s\right)+C{O}_2\left(g\right)+H_{2}O\left(l\right)$