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In quadrilateral ABCD, angle C = 72^circ...

In quadrilateral ABCD, `angle C = 72^circ and angle D = 28^circ`. The bisectors of `angle A and angle B` meet in O. What is the measure of `angle AOB`? एक चतुरभुज ABCD में, `angle C = 72^circ और angle D = 28^circ`है। `angle A और angle B` के द्विभाजक O पर मिलते हैं। `angle AOB` की माप क्‍या होगी?

A

`36^circ`

B

`48^circ`

C

`50^circ`

D

`54^circ`

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