The measure of angle DCG is 145°. Point C has four lines extending from it. One line extends to point D, another extends to point E, another extends to point F, and another extends to point G. Angle ECF is 20 degrees, and angle FCG is 25 degrees. What is the measure of angle DCE?

A. 90°
B. 100°
C. 180°
D. 190°