For the feedback control system shown in the Fig#1 below, with the transfer functions given by: 1 Gp(s) - (15s + 1)(75+1) 1 G (8) $+1 Gc(s) = G..(s) = 1 (A) Determine the range of KC values that result in a stable closed-loop system. (B) Determine the offset for unit step change in the input at the ultimate controller gain (Kem). } G Y U G G G Ym G. Fig