 
			 
			MCQOPTIONS
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				| 1. | Which of the following factors can change the parameters of etch such as depth, size of hole etc.? | 
| A. | Time of etch | 
| B. | Type of etchant | 
| C. | All of the mentioned | 
| D. | None of the mentioned | 
| Answer» D. None of the mentioned | |