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"10. In \\( \\Delta A B C , B D \\perp A C \\) and \\( C E \\perp A B \\). If \\( B D \\) and \\( C E \\) intersect at \\( 0 , \\) then \\( \\angle B O C = \\)\n\\( \\begin{array} { l l l l } { \\text { A) } \\angle A } & { \\text { B) } 90 + A } & { \\text { C) } 180 + \\angle A } & { \\text { D) } 180 - \\angle A } \\end{array} \\)"

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