Point O is the center of the regular octagon ABCDEFGH, and X is the midpoint of the side AB. What fraction of the area of the octagon is shaded?<spanclass=′latex−bold′>(A)</span>3211<spanclass=′latex−bold′>(B)</span>83<spanclass=′latex−bold′>(C)</span>3213<spanclass=′latex−bold′>(D)</span>167<spanclass=′latex−bold′>(E)</span>3215[asy]
pair A,B,C,D,E,F,G,H,O,X;
A=dir(45);
B=dir(90);
C=dir(135);
D=dir(180);
E=dir(-135);
F=dir(-90);
G=dir(-45);
H=dir(0);
O=(0,0);
X=midpoint(A--B);fill(X--B--C--D--E--O--cycle,rgb(0.75,0.75,0.75));
draw(A--B--C--D--E--F--G--H--cycle);dot("A",A,dir(45));
dot("B",B,dir(90));
dot("C",C,dir(135));
dot("D",D,dir(180));
dot("E",E,dir(-135));
dot("F",F,dir(-90));
dot("G",G,dir(-45));
dot("H",H,dir(0));
dot("X",X,dir(135/2));
dot("O",O,dir(0));
draw(E--O--X);
[/asy]