Consider a plant with transfer function as G(s) = s2+2s+1 Its closed loop transfer function with P-Controller with Kp = 3 is 3 C; (s) = Kp = 3 - GCL1(s) = %3D s2+2s+4 While its closed loop transfer function with P-Controller and PD controller is given by 2s+3 C2(s) = Kp + Kps = 3+ 2s GcL2 (s) %3D s2+4s+4 a) Show the graph with step response of GCLI b) Show the graph with step response of GcL2 c) In your own words explain the difference produced by using P controller in GcL1 and the combination of P and PD controller in Gc12.