State representation of a second order system isx1 = -x1 + ux2 = x1

1.	State representation of a second order system isx1 = -x1 + ux2 = x1 - 2x2 + uConsider the following statements regarding the above system : 1. The system is completely state controllable 2. If x1 is the output, then the system is completely output controllable 3. If x2 is the output, then the system is completely output controllable. Of these statements
A.	1, 2 and 3 are correct
B.	1 and 2 are correct
C.	2 and 3 are correct
D.	1 and 3 are correct
Answer» D. 1 and 3 are correct

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