12.Contaminated water is subject to a cleaning process. The concentration of pollutant is initially 10 mg per liter of water. If the cleaning process can reduce the pollutant by 5% each hour, define a function that can represent the concentration of pollutants in the water in terms of the number of hours that the cleaning process has taken place. A. 10+0.95t mg/l B. 10+0.5t mg/l c. 100.5t mg/l D. 100.95t mg/l