Let $u$ and $v$ be two non-zero vectors in $\mathbb{R}^3$. Then $|u \times v|^2 + |u \cdot v|^2$ is equal to

  • A
    $|u|^2 + |v|^2$
  • B
    $2|u||v|$
  • C
    $|u|^2|v|^2$
  • D
    $(|u| + |v|)^2$

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