Perform the Operation and Write the Result in Standard Form $\frac { 3 } { 1 + i } - \frac { 4 } { 1 - i }$

Multiple Choice

Perform the operation and write the result in standard form. ​​ $\frac { 3 } { 1 + i } - \frac { 4 } { 1 - i }$ ​

A) $- \frac { 1 } { 2 }$ + $\frac { 2 } { 7 }$ i
B) $- \frac { 1 } { 2 }$ - $\frac { 2 } { 7 }$ i
C) $- \frac { 1 } { 2 }$ + $\frac { 7 } { 2 }$ i
D) $\frac { 7 } { 2 }$ $- \frac { 1 } { 2 }$ i
E) $- \frac { 1 } { 2 }$ - $\frac { 7 } { 2 }$ i