What is the equation of the ellipse with foci $(\pm 2, 0)$ and eccentricity $e = \frac{1}{2}$?

  • A
    $3x^2 + 4y^2 = 48$
  • B
    $4x^2 + 3y^2 = 48$
  • C
    $3x^2 + 4y^2 = 0$
  • D
    $4x^2 + 3y^2 = 0$

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