&nBsp; 如右图所示，直线AB与DF相交于点o，oD平分∠BoC，Eo垂直于Do，垂足为o，则∠CoF与∠BoE之差为（ &nBsp;&nBsp;）.&nBsp;
&nBsp;
A.30°
B.45°
C.60°
D.90°