$\frac{3}{10 \mathrm{x}}+\frac{9}{14 \mathrm{x}^{2}}$ A) $\frac{12}{140 x^{2}}$ B) $\frac{108}{70 x^{2}}$ C) $\frac{21 x+45}{70 x^{2}}$

Multiple Choice

$\frac{3}{10 \mathrm{x}}+\frac{9}{14 \mathrm{x}^{2}}$

A) $\frac{12}{140 x^{2}}$

B) $\frac{108}{70 x^{2}}$

C) $\frac{21 x+45}{70 x^{2}}$

D) $\frac{12}{10 x+14 x^{2}}$