On a coordinate plane, trapezoid A B C D has points (negative 5, negative 2), (negative 1, 2), (0, negative 1), (negative 2, negative 3).
 Trapezoid ABCD is graphed in a coordinate plane.
 What is the area of the trapezoid?
 10 square units
 12 square units
 20 square units
 24 square units