Write the balanced chemical equation for the following and identify the type of chemical reaction in each case.
potassium bromide (aq.) + Barium iodide (aq.) `to` potassium iodide (aq.) and barium bromide (aq.)

Options

A. Potassium bromide(aq)+Barium iodide(aq) `to` Barium bromide(s) +Potassium lodide
`2KBr(aq)+Bal_(2) to 2Kl(aq)+BaBr_(2)(s)`
Double displacement reation
B. Zinc carbonate(s) `to` Zinc oxide(s) + Carbon dioxide(g)
`ZnCO_(3)(s) to ZnO(s)+CO_(2)(g)`
Decomposition reaction
C. Hydrogen(g) + Chlorine `to` Hydrogen chloride(g)
`H_(2)(g)+Cl_(2)(g) to 2HCl(g)`
Combination reaction
D. Magnesium(s)+Hydrochloric acid(aq) `to` Magnesium chloride(aq)+Hydrogen (g)
`Mg(s)+2HCl(aq) to MgCl_(2)(aq)+H_(2)(g)`