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A particle of mass \( m \) is projected with a velocity \( v \) making an angle of \( 45^{\circ} \) with the horizontal. The magnitude of the angular momentum of the projectile about the point of projection when the particle is at its maximum height \( h \) is
(A) zero
(B) \( m v^{3} /(4 \sqrt{2}) g \)
(C) \( m v^{3} /(\sqrt{2}) g \)
(D) \( m \sqrt{2 g h^{3}} \)
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