In the above equilateral triangle ABC, AD = DE = BE, D and E lie on theAB. If the length of each side of the triangle (i.e., AB, BC and AC) is6 cm, then the area of of the shaded region is

1) 9 cm2
2) 4√3 cm2
3) 5√3 cm2
4) 8√3 cm2
5) 6√3 cm2