The equation of the ellipse whose foci are $(\pm 2, 0)$ and eccentricity is $1/2$ is :

Question

( A ) $\frac{x^2}{12} + \frac{y^2}{16} = 1$
( B ) none of these
( C ) $\frac{x^2}{16} + \frac{y^2}{8} = 1$
( D ) $\frac{x^2}{16} + \frac{y^2}{12} = 1$