Among all the pillar edicts of Ashoka, which one is the

Among all the pillar edicts of Ashoka, which one is the longest one?

[A] 7th pillar edict
[B] 6th pillar edict
[C] 5th pillar edict
[D] 3th pillar edict

This question is part of UPSC Prelims Practice and Mock Tests membership programme.