If the angle between the vectors A→ and B→ is

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If the angle between the vectors A^{^→} and B^{^→} is θ, the value of the product (B^{^→} × A^{^→}) . A^{^→} is equal to

1. BA² sinθ
2. BA² cosθ
3. BA² sinθ cosθ
4. zero

Correct Option: D

(B^{^→} × A^{^→}) . A^{^→} = C^{^→} . A^{^→} = CA cos 90° = 0