Person 'A' says i gave money to this Person 'B'. But Person 'A' did not gave , person 'A' is lying. Person 'A' brings evidence/witness that he did gave money to Person 'B'.
Questions:-
1. How Person'B' proves that he did not took money?
2. How Person'A' witnesses can be proved false? Lie detector can be used against them?
3.Bank statements of Person A can prove anything?
