求解一道数学题！谢谢

GWD 31 -SET2 - 30

Q30:

                                                                  E

                   B                          C

                   A                D

In the figure, each side of square ABCD has length 1, the length of line segment CE is 1, and the length of line segment BE is equal to the length of line segment DE.  What is the area of the triangular region BCE?

A.   1/3

B.   (Ö2)/4

C.   1/2

D.   (Ö2)/2

E.    3/4

选B是么

EC延长与BD交在正方形中心（O）----可证 

Sbce= 1/2* BO * CE

dui 的，谢谢哈