which of following javascript version is introduced strict equality and inequality..., Operators, Javascript

Question:Which  of following JavaScript version is introduced strict equality(===) and strict inequality(!==) operators ?

A JavaScript 1.1 
B JavaScript 1.2 
C JavaScript 1.3 
D JavaScript 1.4

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+ AnswerC

+ ExplanationIf you had an application where both the value and the type of data are important to compare, you could not make that comparison with standard comparison operators.To fix this problem JavaScript introduced this operator

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