Total area

This task is about area of a complex shape.

 
The three squares above overlap each other and they all have sides of 4 cm in length.
What is the area of the shaded shape?
 
(A) 16 cm2
(B) 32 cm2
(C) 44 cm2
(D) 48 cm2
(E) None of these. The area is __________ cm2.