Find the Standard-Form Equation of the Ellipse $\frac{x^{2}}{16}+\frac{y^{2}}{49}=1$ B) $4 x^{2}+7 y^{2}=1$

Multiple Choice

Find the standard-form equation of the ellipse.
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A) $\frac{x^{2}}{16}+\frac{y^{2}}{49}=1$
B) $4 x^{2}+7 y^{2}=1$
C) $\frac{x^{2}}{4}+\frac{y^{2}}{7}=1$
D) $16 x^{2}+49 y^{2}=1$