Given that line segment DE is parallel to line segment AB, determine how triangles DEC and ABC can be shown to be similar. A. Since DCE ACB and DEC ABC, the triangles are similar by angle-angle. B. Since DCE ACB and DC = EC, the triangles are similar by angle-side. C. Since DCE ACB and DEC BAC, the triangles are similar by angle-angle. D. Since DCE ACB and AC = BC, the triangles are similar by angle-side.