Output Y is equal to—

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Output Y is equal to—

1. (A + B) C + DE
2. ABC (D + E)
3. (A + B) C + D + E
4. (AB + C) DE

Correct Option: A

From above figure
F₁ = A + B, F₂ = A + B.C
and F₃ = DE
and, Y = F₂F₃ = (A + B) C + DE