 
			 
			MCQOPTIONS
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				| 1. | Linear time-invariant systems that are designed to pass some frequencies essentially undistorted and significantly attenuate or eliminate others are | 
| A. | Frequency-shaping filters | 
| B. | Frequency-selective filters | 
| C. | Time-shaping filters | 
| D. | Time-selective filters | 
| Answer» C. Time-shaping filters | |