A two input-two output process has the following RGA: [-1.5 2.5 -1.5 2.5 A = Assume that the MVSISO system is tuned for stable feedback control with both loops closed. Case 1: u1 is paired with y1 (loop 1) and u2 is paired with y2 (loop 2). 2.1 What happens if loop 2 is opened? Why? Must loop 1 be retuned? How? Case 2: u1 is paired with y2 (loop 1) and u2 is paired with y1 (loop 2). 2.2 What happens if loop 2 is opened? Why? Must loop 1 be retuned? How? (20 Marks)