What Have We Learned from the Work of Harlow Shapley

What have we learned from the work of Harlow Shapley and others about the location of the Sun in the Milky Way Galaxy?

A) we are almost exactly in the center of a giant flat pinwheel
B) we are very close the edge of the visible disk of the Galaxy, more than 50,000 LY from the center
C) we are high above the disk of the Galaxy, about as far away as the most distant globular cluster
D) we are in the disk of the Galaxy, about 3/5 of the way from the center
E) you can't fool me; because of all the dust, astronomers still have no idea where our Sun is located in the Milky Way Galaxy