The straight lines AD and BC intersect one another at the point O.If ∠AOB + ∠BOD + ∠DOC = 274°, then ∠AOC is :

The straight lines AD and BC intersect one another at the point O.If �

1.	The straight lines AD and BC intersect one another at the point O.If ∠AOB + ∠BOD + ∠DOC = 274°, then ∠AOC is :
A.	86°
B.	90°
C.	94°
D.	137°
Answer» B. 90°