Solution
$$\angle$$ BOC = $$180^\circ$$
The angle subtended by an arc at the centre of the circle is double the angle subtended by it at any point on the circle.
=> $$\angle$$ BOC = $$2 \times \angle$$ BAC
=> $$\angle$$ BAC = $$\frac{180}{2}=90^\circ$$
=> Ans - (C)
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