In figure, ABCD is \[\parallel \mathbf{gm}\] with \[\angle \mathbf{A}=\mathbf{8}{{\mathbf{0}}^{{}^\circ }},\]the internal bisectors of \[\angle \mathbf{B}\] and \[\angle \mathbf{C}\] meet at 0. Find the measure of three angles of ABCO

• A. \[{{30}^{{}^\circ }},{{60}^{{}^\circ }},{{90}^{{}^\circ }}\]
• B. \[{{40}^{{}^\circ }},{{50}^{{}^\circ }},{{90}^{{}^\circ }}\]
• C. \[{{60}^{{}^\circ }},{{60}^{{}^\circ }},{{60}^{{}^\circ }}\]
• D. \[{{70}^{{}^\circ }},{{50}^{{}^\circ }},{{60}^{{}^\circ }}\]