单项选择题
In the rectangular coordinate system above，for how many of the points that lie inside or on the boundary of the shaded region are both coordinates integers（）
A. Six
B. Seven
C. Eight
D. Nine
E. Ten
单项选择题
In the rectangular coordinate system above，for how many of the points that lie inside or on the boundary of the shaded region are both coordinates integers（）
A. Six
B. Seven
C. Eight
D. Nine
E. Ten