David is trying to determine the lengths of the line segments that make up the polygon on the grid below.

On a coordinate plane, point A is at (5, 7), point B is at (10, negative 2), point C is at (8, negative 6), point D is at (negative 6, negative 6), and point E is at (negative 6, 8).

Which statements about lengths of the line segments are true? Check all that apply.
ED is 8 units.
DC is 14 units.
CB is 2 units.
EA can be found by counting..
AB can be found by counting.
DE can be found by counting.