Find an Equivalent Expression with the Given Denominator $\frac{4}{7 y}=\frac{?}{7 y^{2}}$

Multiple Choice

Find an equivalent expression with the given denominator.
- $\frac{4}{7 y}=\frac{?}{7 y^{2}}$

A) $\frac{y}{7 y^{2}}$
B) $\frac{28 y}{7 y^{2}}$
C) $\frac{4 y}{7 y^{2}}$
D) $\frac{4 y^{2}}{7 y^{2}}$