A CMFR is being used to treat an influent containing 20 mg/L of a reactant undergoes a first order decay with a rate constant of 0.2 min-1 . The hydraulic retention time in the reactor is 90 minutes, and the system has operated under the given conditions for long enough that it is at steady state. Then, at a time designated t = 0, the influent concentration increases to 70 mg/L (i.e., it is no longer at steady-state) for 25 minutes after which the influent concentration suddenly drops to zero. Determine the effluent response of the reactor and plot the response graphically.