522Mechanical EngineeringMedium
If E is the duration, ES and EF are die earliest start and finish times, LS and LF are latest start and finish times, then the following relation holds good________?
AD = EF-ES
BLF = LS + D
CEF=ES+D
DLS=LF-D
Eall of the above
Correct answer
E. all of the above
Explanation
The correct answer is all of the above.