A circle is circumscribed on a quadrilatera $$\angle$$ ABCD. If $$\angle DAB = 100^{\circ}$$, $$\angle ADB = 35^{\circ}$$ and $$\angle CDB = 40^{\circ}$$, then find the measure of $$\angle$$ DBC .

A

$$45^{\circ}$$

B

$$60^{\circ}$$

C

$$35^{\circ}$$

D

$$40^{\circ}$$