The middle of the segment with edges at points A (x, y) and B (-4; 3) has the coordinates (-1; 2). the coordinates of point A are:
A. (- 1; 1)
B. (- 2; -1)
C. (2; 1)
D. (3; -1)​

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.