{{B}}pAssAgE onE{{/B}}

whiCh oF thE Following is A DisADvAntAgE oF living in A CosmopolitAn City, ACCorDing to thE pAssAgEA．thE pollution.
B．thE trAFFiC CongEstion.
C．thE high Cost oF living.
D．tilE populAtion DECrEAsE.