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DeltaABC is isosceles having AB = AC and...

`DeltaABC` is isosceles having AB = AC and `angleA=40^(@)` Bisectors PO and OQ of the exterior angles `angleABD` and `angleACE` formed by producing BC on both sides, meet at O. Then the value of `angleBOC` is

A

`70^(@)`

B

`110^(@)`

C

`80^(@)`

D

`55^(@)`

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