A:{2,3}
B:{1,4,5}
C:{4,5}
D:{1,5}
— How does she feel ?
—She is ____ .
已知一个圆经过过两圆x2+y2+4x+y=﹣1,x2+y2+2x+2y+1=0的交点,且有最小面积,求此圆的方程.