A continuous, perfectly mixed chemical reactor was operating at steady state. The temperatures of the inlet and outlet streams were 295 K and 320 K, respectively. At a given time t = 0, the temperature of the input stream increased to 300 K. In response to this step, the temperature of the output stream also increased, parking, after a sufficiently long time, at 330 K. transfer function, relating the outlet temperature to the inlet temperature, in deviation-variables, exhibits a process gain (dimensionless)???