Simplify : $$1 - \left[ {1 - \left\{ {1 - \left( {1 - \overline {1 - 1} } \right)} \right\}} \right]$$

A. 0

B. 1

C. 2

D. 3

E. None of these

Answer: Option A

Solution(By Examveda Team)

Given Expression
= 1 - [ 1 - { 1 - ( 1 - 0 ) } ]
= 1 - [ 1 - ( 1 - 1 ) ]
= 1 - [ 1 - 0 ]
= 0