MCQOPTIONS
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				| 1. | 
                                    In a show about | 
                            
| A. | M, N, and O must all appear. | 
| B. | M may appear and N must appear. | 
| C. | M must appear and O may appear. | 
| D. | O may appear and N may appear. | 
| E. | Only O may appear. | 
| Answer» D. O may appear and N may appear. | |