The Coordinates of Point a Are 20 Units of X

The coordinates of point A are 20 units of X and 40 units of Y.The coordinates of point B are 22 units of X and 30 units of Y.With X on the horizontal axis and Y on the vertical axis,the slope of the line between points A and B is

A) + 5.00
B) + .20
C) + 0.33
D) - 0.20
E) - 5.00