MCQOPTIONS
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				| 1. | 
                                    If D is the duration, ES and EF are the earliest start and finish, LS and LF are latest start and latest finish time, then the following relation holds good | 
                            
| A. | EF = ES + D | 
| B. | LS = LF - D | 
| C. | LF = LS + D | 
| D. | all the above. | 
| Answer» E. | |