Subtract the Rational Expressions $\frac { 13 } { 14 x } - \frac { 7 } { 10 x }$

Multiple Choice

Subtract the rational expressions. $\frac { 13 } { 14 x } - \frac { 7 } { 10 x }$

A) $\frac { 7 } { 23 x }$
B) $\frac { 8 } { 35 x }$
C) $\frac { 57 } { 35 x }$
D) $\frac { 17 } { 38 x }$