Find the Standard-Form Equation of the Ellipse $9 x^{2}+4 y^{2}=1$ B) $\frac{x^{2}}{9}+\frac{y^{2}}{4}=1$

Multiple Choice

Find the standard-form equation of the ellipse.
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A) $9 x^{2}+4 y^{2}=1$

B) $\frac{x^{2}}{9}+\frac{y^{2}}{4}=1$

C) $\frac{x^{2}}{81}+\frac{y^{2}}{16}=1$

D) $81 x^{2}+16 y^{2}=1$