Let $u, v$ and $w$ be three vectors in $R^3$. Then,any vector $z \in R^3$ can be written as $z = au + bv + cw$ for some scalars $a, b$ and $c$ if and only if:

  • A
    Each pair of $u, v$ and $w$ are not parallel
  • B
    Each of $u, v$ and $w$ can be written as a linear combination of the other two
  • C
    All have different magnitude and directions
  • D
    The vectors $u, v$ and $w$ are linearly independent

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