OD, OE and OF are the perpendicular bisectors to the three sides of the triangle ABC. What is the relationship between m ∠BAC and m ∠BOC?
(a) m ∠BAC = 180° – m ∠BOC
(b) m ∠BOC = 2m ∠BAC
(c) m ∠BOC = 90° + \(\frac{1}{2}\) m ∠BAC
(d) m ∠BOC = 90° + \(\frac{1}{2}\) m ∠BAC