If 2x^2-2xy+y^2=289, where x and y are integers and x\ge0, the number of different ordered pairs (x,y) which satisfy this equation is
Answer Choices
A. 8
B. 7
C. 5
D. 4
E. 3
If 2x^2-2xy+y^2=289, where x and y are integers and x\ge0, the number of different ordered pairs (x,y) which satisfy this equation is
Answer Choices
A. 8
B. 7
C. 5
D. 4
E. 3