Add Simplify, If Possible $\frac{2}{21 x}+\frac{4}{15 x^{2}}$ A) $\frac{6}{21 x+15 x^{2}}$ B) $\frac{48}{105 x^{2}}$

Multiple Choice

Add. Simplify, if possible.
- $\frac{2}{21 x}+\frac{4}{15 x^{2}}$

A) $\frac{6}{21 x+15 x^{2}}$
B) $\frac{48}{105 x^{2}}$
C) $\frac{6}{315 x^{2}}$
D) $\frac{2(5 x+14) }{105 x^{2}}$