A. For the system whose transfer function is given by: g(s)=(2s+1)(5s+1)(3s+1)1 and whose step response is given by: y(t)=(1+35et/238et/5)2 Show from this step-response expression that this is an inverse responding system and find the time at which the response experiences "tum around." [19] B. Explain the three disadvantages of using a Feedforward control system. 2UESTION 5 The stirred mixing tank shown in Fig Q5A has two input variables, the cold stream flow rate, and the hot stream flow rate, to be used in controlling two output variables, the temperature of the liquid in the tank, and the liquid level. Enumerate the different ways the control system can be configured. [9]