Using Green's Theorem, the Line Integral $\int$ C $y ^ { 2 } d x + x ^ { 2 } d y$

Multiple Choice

Using Green's Theorem, the line integral $\int$ C $y ^ { 2 } d x + x ^ { 2 } d y$ where C is the square with vertices (0, 0) , (1, 0) , (1, 1) , and (0, 1) , is

A) -1
B) 0
C) 1
D) 2
E) 3