Correct option is C
An EX-NOR gate (also called an equivalence gate) outputs true (1) when both inputs are the same, meaning either both are 0 or both are 1.
The truth table for an EX-NOR gate is as follows:
From the truth table, the logic equation can be derived as:
· When both A and B are 0(A' and B' ) the output is 1.
· When both A and B are 1 ( A and B ), the output is 1.
The logic equation that satisfies these conditions is:
Y=A' B'+AB