If $x = a \cos^3 \theta$ and $y = b \sin^3 \theta$,then:

  • A
    $(\frac{a}{x})^{2/3} + (\frac{b}{y})^{2/3} = 1$
  • B
    $(\frac{b}{x})^{2/3} + (\frac{a}{y})^{2/3} = 1$
  • C
    $(\frac{x}{a})^{2/3} + (\frac{y}{b})^{2/3} = 1$
  • D
    $(\frac{x}{b})^{2/3} + (\frac{y}{a})^{2/3} = 1$

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