The symmetric form of the equation of the line $x = ay + b$ and $z = cy + d$ is

  • A
    $\frac{x - b}{a} = y = \frac{z - d}{c}$
  • B
    $\frac{x - a}{b} = y = \frac{z - c}{d}$
  • C
    $\frac{x - b}{a} = \frac{y}{1} = \frac{z - d}{c}$
  • D
    $\frac{x - a}{b} = \frac{y}{1} = \frac{z - c}{d}$

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