A circuit is built so that the output F = (A + B)’ (the complement of A OR B).
Which statement about F is correct?

Question

A circuit is built so that the output  F = (A + B)’  (the complement of A OR B). 
 Which statement about  F  is correct?

Answer

F  is 1 when both  A  and  B  are 1

Answer

F  is 0 when both  A  and  B  are 0

Answer

F  is 0 only when one of them is 0

Answer

F is 1 only when both  A  and  B  are 0

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