The equation of the ellipse whose one focus is at $(4, 0)$ and whose eccentricity is $4/5$,is
- A$\frac{x^2}{3^2} + \frac{y^2}{5^2} = 1$
- B$\frac{x^2}{5^2} + \frac{y^2}{3^2} = 1$
- C$\frac{x^2}{5^2} + \frac{y^2}{4^2} = 1$
- D$\frac{x^2}{4^2} + \frac{y^2}{5^2} = 1$
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