Simplify the Expression Without a Calculator $$\frac { 9 - 5 } { 6 - ( - 1 ) }$$

Multiple Choice

Simplify the expression without a calculator. $$\frac { 9 - 5 } { 6 - ( - 1 ) }$$

A) $\frac { 4 } { 5 }$
B) $\frac { 4 } { 7 }$
C) $\frac { 5 } { 9 }$
D) $\frac { 7 } { 4 }$
E) $\frac { 5 } { 4 }$