AB is a chord of a circle with centre O.C is a point on the circumference of the circle in the minor sector. If $$\angle$$ ABO = $$40^\circ$$. what is the measure (in degree) of $$\angle$$ ACB?

A

$$110^\circ$$

B

$$100^\circ$$

C

$$130^\circ$$

D

$$120^\circ$$