If I = $\int$ C $( x + y ) d x + ( 2 y + x ) d y$

Multiple Choice

If I = $\int$ C $( x + y ) d x + ( 2 y + x ) d y$ is independent of the path where C is a curve from (-1, 3) to (2, 0) then I is

A) $\frac { 9 } { 2 }$
B) $- \frac { 9 } { 2 }$
C) $\frac { 7 } { 2 }$
D) $- \frac { 7 } { 2 }$
E) $- \frac { 5 } { 2 }$