 
			 
			MCQOPTIONS
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				| 1. | " Tracking problem can be in:" | 
| A. | " Infinite state regulators" | 
| B. | " Finite state regulator" | 
| C. | " Sub-optimal state regulators" | 
| D. | " Non-linear regulators" | 
| Answer» D. " Non-linear regulators" | |