MCQOPTIONS
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				| 1. | 
                                    Acceptor and donor impurities donate______________? | 
                            
| A. | n-carriers only | 
| B. | p-carriers only | 
| C. | p-carriers and n-carriers respectively | 
| D. | n-carriers and p-carriers respectively | 
| Answer» D. n-carriers and p-carriers respectively | |