The minimum function that can detect a “divisible 3”

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The minimum function that can detect a “divisible 3” 8421 BCD code digit (representation D8D4D2D1) as given by—

1. D8D1 + D4D2 + D8D2D1
2. D8D1 + D4D2 D₁+ D₄D2D1 + D₈ D₄ D₂ D₁
3. D4D1 + D4D2 + D8 D₁ D₂ D1
4. D4D2 D₁ + D₄D2D1 + D8D4D2D1

Correct Option: B

0, 3, 6, and 9 are divisible by 3