The switching function f (A, B, C, D) = Σ m (5, 9, 11,

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The switching function f (A, B, C, D) = Σ m (5, 9, 11, 14) can written as—

1. A′ B C′ D + A B′ C′ D + AB′ CD + ABCD′
2. A′ B′ C′ D + AB′ C′ D + A′ B′ CD + ABCD′
3. A′ BC′ D + A′ BC′ D′ + AB′ C D′ + ABCD
4. None of these

Correct Option: A

Σ m (5, 9, 11, 14)

Hence alternative (A) is the correct answer.