Add or Subtract as Indicated $\frac { 46 } { 91 } - \frac { 38 } { 91 }$

Multiple Choice

Add or subtract as indicated. Write the answer in lowest terms.
- $\frac { 46 } { 91 } - \frac { 38 } { 91 }$

A) $\frac { 12 } { 13 }$
B) $19 \frac { 19 } { 91 }$
C) $\frac { 4 } { 91 }$
D) $\frac { 8 } { 91 }$