Find Another Name for the Given Number, but with the Denominator

Multiple Choice

Find another name for the given number, but with the denominator indicated.
- $\frac{7}{15}=\frac{?}{45}$

A) $\frac{315}{675}$
B) $\frac{7}{45}$
C) $\frac{21}{45}$
D) $\frac{105}{45}$