11.已知直线y1=2x与直线y2=-2x+4相交于点A.有以下结论:①点A的坐标为A(1,2);②当x=1时,两个函数值相等;③当x<1时,y1<y2;④直线y1=2x与直线y2=2x-4在平面直角坐标系中的位置关系是平行.其中正确的是( )
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| A. | .①③④ | B. | .②③ | C. | .①②③④ | D. | .①②③ |