抛物线y2=2px(p>0)的焦点为F,过点M(p,0),倾斜角为45°的直线与抛物线交于A、B两点,若|AF|+|BF|=10,则抛物线的准线方程为()
A.x+1=0
B.2x+1=0
C.2x+3=0
D.4x+3=0